Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 265972: Solve the formula for the given letter.Assume all variables represent nonegative numbers.
a^2+k^2=f^2, for a
Click here to see answer by Edwin McCravy(20054)

Question 266145: how do you find the perimeter of a quadratic equation with the points given?
(1,-1) & (-0.25,2.125)
(-0.25,2.125)& (-2,-4)
(-2,-4) & (-1,-5)
(-1,-5) & (1,-1)

Click here to see answer by Alan3354(69443)

Question 266185: t(3t-120)=-12
Click here to see answer by stanbon(75887)

Question 266186: Solve the equation x^4+16x^2+63=0
Click here to see answer by checkley77(12844)

Question 266397: Hi, Can someone please give me a hand witht this one?
b^2+2b-24=0
Thanks
Click here to see answer by Alan3354(69443)

Question 266349: Another method of solving quadratic eqautions came from India.
a. move the constant term to the right side of the equation.
b. multiply each term in the equation by four times the coefficient of the x square term.
c. Square the coefficient of the orginal x term and add it to both sides.
e. sel the left side of the equation equal to the postive square root of the number on the right side and solve for x.
f. set the left side of the equation equal to the negative square root of the number on the right side of the equation and solve for x.
Solve the following.
x square - 2x -13=0
4x square - 4x + 3 = 0
x square + 12x-64=0
2x square - 3x - 5=0
I need help with any or all of the following to see an example of the process.

Click here to see answer by user_dude2008(1862)

Question 266445: Find the value or values of y in the quadratic equation y^2+4y+4=7
Click here to see answer by jim_thompson5910(35256)

Question 266474: Use the quadratic formula to solve the equation; 2x^2-x=-7
Click here to see answer by JBarnum(2146)

Question 266543: If given a picture of the graph, the vertex of (-1, 5) and another set of points, (2, -13), how do you write the equation in vertex form, f(x) = a(x-h)^2 +k? I know part of the equation is f)x) = a(x+1)^2 +5, but how do I find the "a".
Click here to see answer by drk(1908)

Question 266679: state the value of the discriminant and number of real solution s^+3s+3=0 and one last? the cost of maufactor amolded part is related to the quanity produced during a production run. when 100 parts are produced, the cost is 300. when 500 parts are produced, the cost is 1900 dollars wat is the averae cost per part.
Click here to see answer by drk(1908)

Question 266719: Find the vertex, the line of symmetry and the maximum or minimum value of f(x). Graph the function.
f(x)=1/5(x+2)^2+8
Click here to see answer by stanbon(75887)

Question 266797: the larger of two negative numbers is five more than the smaller. if the square of the larger number is increased by 27, the result is the smaller number multiplied by-7. find the numbers
Click here to see answer by drk(1908)

Question 266866: 25x^2+25=0
Click here to see answer by dabanfield(803)

Question 266884: Hi I need help on understanding this problem:
give exact and approximate solutions.
(x-5)^2=18
Click here to see answer by stanbon(75887)

Question 266899: what are the zeroes of 5x^2-13x=-6
Click here to see answer by JBarnum(2146)

Question 266938: z^2 + 12z + 15
Click here to see answer by JBarnum(2146)

Question 266930: Translate the problem into a pair of linear equations in two variables. Solve using elimination or substitution.
Joe has a collection of nickels and dimes that is worth $5.65 . If the number of dimes was doubled and the number of nickels was increased by 2, then the value of the coins would be $10.15 . How many dimes does he have?
Click here to see answer by JBarnum(2146)

Question 267031: Find the 1st 5 values of the recursive function, then find their 1st and 2nd differences, then state wheather the recursive function has a linear model, quadratic model or neither. f(0)=-2, f(n)=f(n-1)+2n
Click here to see answer by drk(1908)

Question 267042: Packaging. A candy box is to be made out of a piece of cardboard that measures 8 by 12 inches. Equal-sized squares x inches on a side will be cut out of each corner, and then the ends and sides will be folded up to form a rectangular box.
A) Express the volume of the box V(x) in terms of x.
B) What is the domain of the function V ( determined by the physical restrictions)?
C) Complete table
Volume
X V (x)
1
2
3
D) Plot the points in part (C) and sketch a graph of the volume function through these points. (c) a graphing utility can be used as an aid.
Click here to see answer by drk(1908)

Question 266830: the perimetere of a rectangle is 20 in and the area is 16sq in. find the diminsions
Click here to see answer by ankor@dixie-net.com(22740)

Question 267146: what is the greatesr common factor of 10x^3-45x^2+20x
Click here to see answer by jim_thompson5910(35256)

Question 267271: WhY Is It So
Hard For Me To Do This I
Think Im Smart But I Just Cant Do
This I Think Itz Cuz Im Stupid Idk But I Need Alot Of Help ASAP!!!
Click here to see answer by jim_thompson5910(35256)

Question 267280: I am having the worst time trying to solve this one. Here is what I have:
25x^2 + 10x + 1
I come up with (5x + 2)(5x )
and then i am lost!
Please help!!
Click here to see answer by jim_thompson5910(35256)

Question 267319: solve each equation. give answers involving radicals in simplest radical form.
t^2 + 6t + 6 = 0
please show me how to do this
Thanks
Click here to see answer by solver91311(24713)

Question 267316: A rectangle has a perimeter of 100 cm. Find the greatest possible area for the rectangle.
Click here to see answer by solver91311(24713)

Question 267189: Find x.

Click here to see answer by ankor@dixie-net.com(22740)

Question 267557: (x-1)^2 = -49 take sqrt x-1=7 or x-1=-7 we now add 1 to each side of equations to solve for x x=8 or x=-6
Click here to see answer by Alan3354(69443)

Question 267626: . What is the equation for x = 2, 3? Can you also draw the graph
Click here to see answer by stanbon(75887)

Question 267628: How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution? Explain. Provide your classmate�s with one or two solutions with which they must create a quadratic equation.

Click here to see answer by Alan3354(69443)

Question 267713: 3x+y=16
y=16-3x
x(16-3x)=16x-3x^2
x^2 +(16x-3x^2)= x^2+16x+9x^2
10x^2 +256
I get 10x^2-144x+256........the answer is 10x^2-96x+256
How do they get -96x??
This is a minimization/maximization of quadratic functions problem
Thanks for any/all help!
Click here to see answer by Alan3354(69443)

Question 267481: x/(.900-2x)^2 = 4 How do I solve for x?
Click here to see answer by ankor@dixie-net.com(22740)

Question 267876: how do you get the quotient for -9/i in the form a + bi
and
how do you get the quotient for

9+3i
_____
4 -8i
Click here to see answer by stanbon(75887)

Question 267876: how do you get the quotient for -9/i in the form a + bi
and
how do you get the quotient for

9+3i
_____
4 -8i
Click here to see answer by Alan3354(69443)

Question 267876: how do you get the quotient for -9/i in the form a + bi
and
how do you get the quotient for

9+3i
_____
4 -8i
Click here to see answer by josmiceli(19441)

Question 267893: I have a problem for Hw that i dont understand.
the problem says to write the equation in standard form.
heres the equation: 4x^2=12
how would you write that equation in standard form?
thanks for the help!
Click here to see answer by palanisamy(496)

Question 267899: How do factor out the greatest common factor of 56m8 + 32m6 +40?

Click here to see answer by persian52(161)

Question 268037: If you are looking at a graph of a quadratic equation, how do you determine where the solutions are? If you have any examples to provide, that would also be helpful. Thanks!
Click here to see answer by richwmiller(17219)

Question 268002: How do you know if a quadratic equation will have one,two, or no solutions? how do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution? explain
Click here to see answer by ankor@dixie-net.com(22740)

Question 268559: please help me solve this equation: 1/a+1/b=1/c. solve for b
Click here to see answer by ptaylor(2198)

Question 268688: -4j^2+3j-28=0
Click here to see answer by persian52(161)

Question 268748: The area of Beth's rectangular garden is(x2+13x+42)ft.2.the with is(x+6)ft.
what is the length of the garden?
Find the perimeter in term x.
Click here to see answer by dabanfield(803)

Question 268828: Please help me solve this equation: .
Click here to see answer by palanisamy(496)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240