Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 258055: Please solve this equation by using the quadratic formula
x^2 - 5x + 9 = 0
Click here to see answer by richwmiller(9135)

Question 258000: What is the points of intersection of these equations
x-2y-8=0
x^2=y^2-12x+6y+29=0
Click here to see answer by Edwin McCravy(8880)

Question 258000: What is the points of intersection of these equations
x-2y-8=0
x^2=y^2-12x+6y+29=0
Click here to see answer by Alan3354(30959)

Question 258096: how do i solve 4x^2+4x-15=0
Click here to see answer by Alan3354(30959)

Question 258096: how do i solve 4x^2+4x-15=0
Click here to see answer by scott8148(6628)

Question 258096: how do i solve 4x^2+4x-15=0
Click here to see answer by checkley77(12569)

Question 257975: x^2-7x=-12
Click here to see answer by checkley77(12569)

Question 258137: factor completely
36w^4-60w^3+16w^2
Click here to see answer by nerdybill(6948)

Question 258137: factor completely
36w^4-60w^3+16w^2
Click here to see answer by drk(1908)

Question 258137: factor completely
36w^4-60w^3+16w^2
Click here to see answer by checkley77(12569)

Question 258234: How do I solve this problem f(x) = -0.3x^2 + 25x + 16 using the quadratic formula and graphing...I'm lost. I know x = 1 if this helps.
Click here to see answer by richwmiller(9135)

Question 258187: 37. subtract.
x/x^2-9 - 3/x^2-9

A. x+3/x
B. 1/x-3
C. 3/x+3
D. 1/x+3
Click here to see answer by unlockmath(1599)

Question 258286: what is 6x^2 + 10x?
Click here to see answer by richwmiller(9135)

Question 258241: a 16 inch wire cut into two pieces bent into squares find the length if the sum of the areas is 10 in squared
Click here to see answer by Fombitz(13828)

Question 258241: a 16 inch wire cut into two pieces bent into squares find the length if the sum of the areas is 10 in squared
Click here to see answer by ankor@dixie-net.com(15624)

Question 258319: A parabola y = ax^2 + bx + c has vertex (4, 2). If (2, 0) is on the parabola, then find the value of abc
Click here to see answer by Fombitz(13828)

Question 258511: Solve the quadratic function by completing the square.
y=-x^2-7x-30
Click here to see answer by edjones(7569)

Question 258528: Please Help Me Solve This Quadratic Equation Application:
The Border of uniform width around a pool has outer dimensions of 26 feet by 66 feet. Find the width of the border if the pool has an area of 1200 square feet
Click here to see answer by checkley77(12569)

Question 258573: What is the answer to the problem? 8(10-8+18)/2=x

Click here to see answer by College Student(505)

Question 258645: The length of a rectangle is twice the width. The area is 98yd^2. Find the length and the width.
The length is ? yd.
(Simplify your answer)
The width is ? yd.
(Simplify your answer)
Thank you very much for your help with this problem.
Click here to see answer by stanbon(57222)

Question 258684: can you help me find the answer to 3( y − 2) − 5 = 2y +1;
Click here to see answer by unlockmath(1599)

Question 258755: Solve the formula for the given letter. Assume all variables represent non-negative numbers.
E=mc^2, for c

Thank you so much for your help.
Laura
Click here to see answer by Fombitz(13828)

Question 258754: Give exact and approximate solutions to three decimal places.
x^2-5x+5=0
The exact solutions are x = ?
The approximate solutions to 3 decimal places are x=?
Thanks so much for your help.
Laura
Click here to see answer by Fombitz(13828)

Question 258751: Determine the nature of the solutions of the equation.
x^2 - 18 = 0
Choose the nature of the solutions of the equation.
Thank you so much for your help.
Click here to see answer by Fombitz(13828)

Question 258752: Graph the function. Find the vertex, line of symnetry, and maximum or minimum value.
f(x)= (x+2)^2-3
The vertex is ?
The minimum value is f(x) = ?
Thank you so much for your help.
Click here to see answer by Fombitz(13828)

Question 258781: A farmer decides to enclose a rectangular garden, using the side of a barn as one side of the rectangle. What is the maximum area that the farmer can enclose with 80ft. of fence? What should the dimensions of the garden be to give the area?
The maximum area that the farmer can enclose with 80ft. of fence is ? sq ft.
The dimensions of the garden to give this area is 40 ft. by ? ft.
Thank you in advance for your help with this problem.
Click here to see answer by richwmiller(9135)

Question 258790: This is actually solving a problem that is quadratic in form. I am having lots of difficulties trying to figure this one out trying to substitute, but even sure if that is what I am supposed to do and totally stumped. Here is the problem:
(x-3)^2/5=(4x)^1/5
If I let u = (x-3)^1/3, it still doesn't quite make it into a quadratic as it then looks like:
u^2=(4x)^1/5
This is where I am stumped, not sure how to proceed after this since I can't use u to equal the 4x also as they are not like terms.
(and the exponents are fractions)
Click here to see answer by Earlsdon(6287)

Question 258851: Give exact and approximate solutions to three decimal places.
y^2-10y+25=4

Thank you so much
Click here to see answer by richwmiller(9135)

Question 258856: Give exact and approximate solutions to three decimal places.
(x+9)^2=4
What are the exact solutions?
x = ?
Thank you so much.
Click here to see answer by Fombitz(13828)

Question 258646: Write a quadratic quation having the given numbers as solutions.
-5 and -1
The quadratic equation is ? = 0
(Type your answer in standard form. Type an expression using x as a variable.)
Thank very much for your help with this problem.
Click here to see answer by ankor@dixie-net.com(15624)

Question 258477: aki's bicycle designs has determined that when x hundred bicycles are built, the average cost per bicycle is given by C(x)=0.5x^2-1.2x+2.725, how many bikes should the shop build to minimize the average cost per bike? thank you
Click here to see answer by mathbath(13)

Question 258958: How do you solve any type of q- equation? I am starting on these, but am having some difficulty. It sometimes is very confusing at times to know when to do and calculate certain formulas and operations. I hope you can help me!
Click here to see answer by stanbon(57222)

Question 259039: a)What is the value of k if x=3 is a root of 2x^2 - kx - 3=0 ?
b)Determine the value(s) of k for which the equation kx^2 -4x + k = 0 will have two equal and real roots.
c)What is the nature of the roots of 2x^2 - x - 3 = -5?
I asked these together because they are all similar. Thanks for any help.
Click here to see answer by richwmiller(9135)

Question 259080: Can someone help with this please
Solve by completing the square.
m squared - (25 over 2)m = 5 over 2
The solutions are ?
(hint Use redicalsas needed. Use a comma to separate answers.)
THank you for your help
Click here to see answer by richwmiller(9135)

Question 259196: Solve by completing the square.
m squared - (25 over 2)m = 5 over 2
The solutons are ?

Thank you so much for your help.
Click here to see answer by Fombitz(13828)

Question 259244: What is the answer to to y from this equation: 8x-2y=44
Click here to see answer by Fombitz(13828)

Question 259236: for the equation x^2+6x=-3.
A. find a, b, and c.(it will help you to put the equation in standard form first.)
B. solve the equation using the quadratic formula.
please help!!!!
Click here to see answer by vksarvepalli(154)

Question 259207: Please help me solve this equation:
5x+7y=76
6x-8y=91
Click here to see answer by Fombitz(13828)

Question 259276: f(x)=-x^2+12x+3
find the vertex(ordered pair):
find line of symmetry:
maximum/minimum of f(x) is:
the value f(6)=39 is which of the following maximum or minimum:
Click here to see answer by richwmiller(9135)

Question 259303: solve, what are the solutions: 4x^2=12
find x-intercepts of f(x)=4x^2-12
(intercepts are ordered pair)
Click here to see answer by drk(1908)

Question 259275: My question is write the quadratic equation in vertex form. give the coordinates of the vertex and the equation of the azis of symmetry
y=-6x2-72x-221
Click here to see answer by Fombitz(13828)

Question 259278: find the x and y-intercepts (ordered pair for both answers):
f(x)=25x^2+20x+4
Click here to see answer by Fombitz(13828)

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