Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 622561: How do you put these equations into quadratic form? I've watched several instructional videos and I'm still a little confused.
-9x^8-6x^4+17
-5x^20-7x^10+15
3x^12+20x^6+6
Thank you.
Click here to see answer by solver91311(24713)

Question 622580: i am having trouble solving this equation
how can you factor
2a2 + 1 + 3a
Click here to see answer by josmiceli(19441)

Question 622580: i am having trouble solving this equation
how can you factor
2a2 + 1 + 3a
Click here to see answer by MathTherapy(10552)

Question 622591: using the �ac method�
how can i solve
15x^2 � 6x + 1
Click here to see answer by Alan3354(69443)

Question 622620: Use the x-intercept method to find all real solutions of the equation.
x^3-10x^2+17x+28
a.x=-1,4, or 7
b.x=-1,4, or -7
c.x=1,-4, or -7
d.x=1,-4, or 7

Click here to see answer by lynnlo(4176)

Question 622630: Solve the equation by factorisation method x^2+(x+2)^2=650
I attempted the question but I am stuck at this step
x^2+x^2+4-650=0
2x^2-646=0
Click here to see answer by math-vortex(648)

Question 622628: x^2+(x+2)^2=650
x^2+x^2+4-650=0
2x^2-646=0
Click here to see answer by lynnlo(4176)

Question 622752: identify the axis of symetr and vertex of f(x)=-2x^2-2x-1
Click here to see answer by solver91311(24713)

Question 622744: Some one help me with this quadratic question.

Solve the quadratic equation (x + 4)^2 - 9 = 0 by taking square roots.

Click here to see answer by ewatrrr(24785)

Question 622744: Some one help me with this quadratic question.

Solve the quadratic equation (x + 4)^2 - 9 = 0 by taking square roots.

Click here to see answer by Earlsdon(6294)

Question 622744: Some one help me with this quadratic question.

Solve the quadratic equation (x + 4)^2 - 9 = 0 by taking square roots.

Click here to see answer by solver91311(24713)

Question 622680: 1. If the area of a square garden is (x
2
+ 8x + 16) sq units, is it possible to find the measure of its side? Why? Or why
not? How? 2. If the area of a garden is (3x
2
+ 8x + 4) sq units, is it possible to find the measure of the side? Is the garden a
square? Why? Or why not?
3. Is x
2
� y
2
= (x � y)
2
? Explain why or why not. If you do not understand the rules on factoring , what
do you think will happen?
4. What is the difference of the squares of 105 and 5 ? What is the square of their difference?
5. Explain or illustrate how you can find the difference of the squares of two terms using 105 and 5.

Click here to see answer by Earlsdon(6294)

Question 622729: Solve the fractional equation 3/7x-2 - 2/7x+3 = 3/4
Click here to see answer by ewatrrr(24785)

Question 622759: Consider the set Z of all Integers and an integer m > 1. For all integers x and y  Z, if x � y is divisible by m, then show that this
defines an equivalence relation on Z. An equivalence relation is reflective, symmetric, and transitive.
Click here to see answer by solver91311(24713)

Question 622784: πx2+2x+1=0
solve using the quadratic formula
Click here to see answer by Alan3354(69443)

Question 622805: Solve the quadratic equation by using the quadratic formula. (Enter your answers as a comma-separated list.)

x� = -3x + 1
Click here to see answer by Edwin McCravy(20055)

Question 622808: how I solve this equation?, step by step? 6x�+x�=(18-x)�
Click here to see answer by ewatrrr(24785)

Question 622804: Solve the quadratic equation by completing the square. (Enter your answers as a comma-separated list.)

x2 + 5x − 2 = 0
Click here to see answer by lwsshak3(11628)

Question 622804: Solve the quadratic equation by completing the square. (Enter your answers as a comma-separated list.)

x2 + 5x − 2 = 0
Click here to see answer by ewatrrr(24785)

Question 622860: how do I solve (2x-1)^+4=0
I have an answer of x=1+- square root of -4 but don't know if you can have a square root of a negative numberr
Click here to see answer by ewatrrr(24785)

Question 622701: Having a hard time doing these quadratic equation someone help me out please.
Solve the quadratic equation (x + 4)^2 - 9 = 0 by taking square roots. if there are no solutions, enter NONE.

Click here to see answer by KMST(5328)

Question 622852: What is the equation of the quadratic function with roots 0 and 2 and a vertex at (1,5)
Click here to see answer by math-vortex(648)

Question 622965: Please help me solve this equation: −9 + 8v = 7 + 4v
THE STEP HERE IS MISSING
4v = 16
v = 4
Please fill in the step and solve the problem! thank you so much :)
Click here to see answer by math-vortex(648)

Question 623011: using quadratic formula solve; 6x^-7x-2=0
I have a=6,b=-7,c=-2 but I end up with an answer; 7+-square root of 97 all divided by 12
I cannot simplify the square root 97 and the question asks for the answer in simplest exact values
Click here to see answer by lwsshak3(11628)

Question 623002: how to solve: -3(2x-3)^+6 all divided by 3 =0
I have an answer of 3+-square root of 2 all divided by 2 but am stuck at trying to simplify it further
Click here to see answer by jsmallt9(3758)

Question 622950: Solve 3/x+1=x-2/2x^2-x-3 step by step please
Click here to see answer by jsmallt9(3758)

Question 623054: Question 623037 kindly answered by Alan3354, where does the 10/3 hours come from
Click here to see answer by Alan3354(69443)

Question 622923: Solve the fractional equation 3/7x-2 - 2/7x+3 = 3/4 step by step please
Click here to see answer by mykasha(37)

Question 623061: x3/2 = 216
Click here to see answer by Alan3354(69443)

Question 623075: solve 5x^-11=0
I have a=5,b=0,c=-11 with an answer of x=*-square root of 220 over 10
Can this solution be reduced
Click here to see answer by Alan3354(69443)

Question 623062: Find all the real solutions of the equation by first rewriting the equation as a quadratic equation. (Enter your answers as a comma-separated list.)

7x − 37Squareroot of x + 48 = 0
Click here to see answer by jsmallt9(3758)

Question 623059: Find all the real solutions of the equation by first rewriting the equation as a quadratic equation. (Enter your answers as a comma-separated list.)

6x^2/3 − 7x^1/3 − 24 = 0
Click here to see answer by jsmallt9(3758)

Question 623060: Find all the real solutions of the equation by first rewriting the equation as a quadratic equation. (Enter your answers as a comma-separated list.)

x6 + x3 − 6 = 0
Click here to see answer by ankor@dixie-net.com(22740)

Question 623119: Using The Pythagorean Theorem
Let a = x, and b = 2x + 4, so that c = 2x + 6.
Please help

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

Question 623144: Simplify and express in the form a+bi
(2+3i)(3+2i)
Is 13i the correct answer?
Click here to see answer by lwsshak3(11628)

Question 623144: Simplify and express in the form a+bi
(2+3i)(3+2i)
Is 13i the correct answer?
Click here to see answer by fcabanski(1391)

Question 623137: Glenn cuts half a rectangular lawn, 40x30, by mowing strips of equal width around the perimeter. Brad cuts the small rectangle left. How wide a strip does Glenn cut so that they share the work equally,
I calculated the area of the lawn to be 1200m^2 and the perimeter to be 140m but don't know how to proceed from here.
Click here to see answer by ankor@dixie-net.com(22740)

Question 623214: please
can you explain to me
how can i solve this
a4b + a2b3

Click here to see answer by ewatrrr(24785)

Question 623213: can you explain to me
how can i solve this
18z + 45 + z2
Click here to see answer by ewatrrr(24785)

Question 623139: how can i solve this
18z + 45 + z2
Click here to see answer by Alan3354(69443)

Question 623302:
Click here to see answer by math-vortex(648)

Question 623440: x� � 13x � 5 = 0 I need to solve this by completing the square.Which I think I have done? I also need to solve it graphically using the intersections of two equations. I'm not which two equations to use or how the intersction will help me find the solution?
Here is my work: completing the square
x� � 13x � 5 = 0
(x� -13x + 169/4)-5- 169/4 = 0
(x-13/2)(x-13/2)- 147/4 =0
(x- 13/2)� - 147/4 =0
(x- 13/2)� = 147/4 Take the square root of both sides
x- 13/2 = +- the square root of 147/4
x= +- the square root of 147/2 + 13/2
Is this right? I feel like I'm missing something or doing something wrong.
Thanks for all of the help!
Click here to see answer by Alan3354(69443)

Question 623477: Give exact and approximate solution to three decimal places for (x-6)^2=64
Click here to see answer by Alan3354(69443)

Question 623547: 3x^2=13x+56
3x^2-13x=56
then
x(3x-13)=56
x=56

3(56) -13. The result that i have is wrong; i do believe that i'm following the right process, but made a slight error, or maybe i missed a step. Your help is appreciated.
Click here to see answer by Theo(13342)

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