Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 119082: please solve this using quadratic equatin with factoring method
m^2/18 - m/6 - 1 = 0
Click here to see answer by ankor@dixie-net.com(22740)

Question 119261: I solved the quadratic equation of 3x^2+11x-20=0 by factoring and have the correct answer of x=4/3, -5. How would I solve graphically by creating a tchart with 6 points that will lie on the parabola. Finding the vertex will be helpful. The graphical work must be sufficient to determine the solutions without knowing them from algebraic work. Any help you can give would be greatly appreciated.
Click here to see answer by Fombitz(32388)

Question 119345: If you could please help me on the steps when using the quadratic equation?
I can identify the A,B and C variables and know the formula. And yet I can never seem to get the right solution. Can you break it down a bit for me? The site helps but it leaves me stuck as soon as I put in the variables. I think the problem is Im unsure how to solve what is going to be squared. If you have absolutely no idea what I'm saying I understand, I am bad at explaining things and would try again. Thank you for your help at any rate.
~S
Click here to see answer by Fombitz(32388)

Question 119411: Use the quadratic formula to solve the equation.
-2x^2+x+8=0
Solve the equation.
x^2+18x+81=25
Simplify (square root of -175) using the imaginary number i.
Click here to see answer by jim_thompson5910(35256)

Question 119461: Solve the equation by extracting square roots - list both the exact solution and the decimal solution rounded to two decimal places.
(x+13)^2 = 25
Click here to see answer by jim_thompson5910(35256)

Question 119463: Solve:

Click here to see answer by chitra(359)

Question 119464: Solve:

Click here to see answer by MathLover1(20849)

Question 119488: original problem: 5x^2-30x+40=0
work:
5x^2-30x=-40
x^2-6x=-8
x^2-6x+9=-8+9
Please help. I keep getting lost. Could you show me how to work this problem step by step? I already have the answer, so I'm not looking for that, just how to do it. The answer is x=2, x=4
Click here to see answer by stanbon(75887)

Question 119491: A quadratic function h(x) has zeros at 4 and -3 and a y intercept of -12. The function h(x) is translated -3 units on the x axis. Which of the following equations represents g(x), the transformed h(x)?
a. g(x) = x^2 - 5x
b. g(x) = x^2 + 7x
c. g(x) = x^2 -x -15
d. g(x) = x^2 + 5x - 6
Click here to see answer by stanbon(75887)

Question 119529: determine whether the equation has 2 solutions, 1 solution, or no solution. SHOW WORK! PUT IN STANDARD FORM!
22)x^2-3x+2=0
24)-3x^2+5x-1=0
26)x^2-2x+4=0
28)3x^2-6x+3=0
30)-5x^2+6x-6=0
Click here to see answer by jim_thompson5910(35256)

Question 119610: A collector's coin originally purchased for $3 in 1994 is expected to double in value by the year 2004. Write the equation of an exponential function to model this situation.Explain your answer.
Click here to see answer by stanbon(75887)

Question 119663: What are the roots of (4x-3)^2=36?
Click here to see answer by MaxLiebling(13)

Question 119675: Find the constant term that should be added to make the following expression a perfect-square trinomial.
x^2 � 6x
Find the constant term that should be added to make the following expression a perfect-square trinomial. x^2 + 7x
Click here to see answer by checkley71(8403)

Question 119662: One root of x^2-4x+4a=0 is 2-4i. What is the value of a ?
Click here to see answer by jim_thompson5910(35256)

Question 119661: What is the value of k if one root of (3k+1)x^2-2kx=-5 is 1?
Click here to see answer by jim_thompson5910(35256)

Question 119666: What is the range for 3(y+2)= (x-4)^2?
Click here to see answer by Fombitz(32388)

Question 119765: Solve using the quadratic formula please:

Please help me with step by step instructions to help me understand.
Thank you in advance!
C
Click here to see answer by Caallen2(9)

Question 119768: Solve by factoring:
x^2-9x=-20
Thanks in advance!
C
Click here to see answer by Caallen2(9)

Question 119766: Solve using the quadratic formula please:
x^2-3x-23=5
Please provide step by step instructions to help me understand.
Thanks!
C
Click here to see answer by Caallen2(9)

Question 119665:
What is the sum of the roots of the quadratic equation 2x^2-x=4?
Click here to see answer by checkley71(8403)

Question 119954: Where would the discriminant be in this problem: x2(exponent)+3x-2=0
Click here to see answer by jim_thompson5910(35256)

Question 120039: Find the quadratic equation with roots -1+4i and -1-4i.
The correct answer is x^2 + 2x + 17 = 0 according to my teacher.
Is this answer wrong because everytime I try to solve the problem, I do not get that answer.
If it is right, please explain how.
Click here to see answer by bucky(2189)

Question 120043:
x^2-(x-4)
Click here to see answer by checkley71(8403)

Question 120095: 6 is what % of 50
Click here to see answer by josmiceli(19441)

Question 120137: USE THE QUADRATIC FORMULA TO SOLVE:

x^2 - x/1 =1
2
*Note. Problem reads, x Squared over 2, minus x over 1 = 1
Use Quadratic Formula To solve
Click here to see answer by stanbon(75887)

Question 120143: What type of function does the following table of values represent?
x: -21,-18,-15,-12,-9
y:3,6,12,24,48

Click here to see answer by stanbon(75887)

Question 120151: A quadratic equation has roots 1+-2i.What is the equation?
Click here to see answer by ankor@dixie-net.com(22740)

Question 120247: graph:

y=x� y=-x�
Click here to see answer by checkley71(8403)

Question 120251: What value of b will make the expression x^2-bx+40 a perfect square?
Click here to see answer by stanbon(75887)

Question 120256: Using the following sequence (-1,-5,-9,-13,...) find the function tn.
Click here to see answer by stanbon(75887)

Question 120256: Using the following sequence (-1,-5,-9,-13,...) find the function tn.
Click here to see answer by bucky(2189)

Question 120255: Bill used completing the square to find the zeroes of the function . How is this done ?
Click here to see answer by MathLover1(20849)

Question 120255: Bill used completing the square to find the zeroes of the function . How is this done ?
Click here to see answer by Edwin McCravy(20054)

Question 120253: What is the standard form of the function -1/2(y+1)=(x-2)^2 ?
Click here to see answer by MathLover1(20849)

Question 120150:
What would be the nature of the roots of the quadratic equation x(x-1)-3=5x?
Click here to see answer by checkley71(8403)

Question 120363: What is the solution for using the quadratic formula? Please explain how you got the answer in steps.
Click here to see answer by jim_thompson5910(35256)

Question 120418: 1)Could you please help me sole for the following equations
Solve the following by factoring:
a)x squared minus 6x minus 16=0
Answer:
Show your work here:
b) 6x squared plus 42 x=0
Please solve for the following.
Show work here
Click here to see answer by jim_thompson5910(35256)

Question 120419: 2) If f(t)=2t squared minus 4t minus 1,find
a) f(2)
Answer:
Show your work here:

b) f(-1)
Answer:
Show your work here:

Click here to see answer by jim_thompson5910(35256)

Question 120455: how do you reduce -4+sq.root of 40/-2
Click here to see answer by jim_thompson5910(35256)

Question 120485: Could you please help me solve for the following problem
Find the corresponding y values for x = -4, -3, -2, -1, 0, 1, 2 if y=x squared plus 2x minus 3.
Could you please show your work.
Thank You
Click here to see answer by MathLover1(20849)

Question 120482: An astronaut standing on the surface of the moon throws a rock upward. The height of the rock is given by s=-2.7t^2+27t+6.3, where s is the height in metres and t is the time in seconds.What was the initial height of the rock?
Click here to see answer by stanbon(75887)

Question 120476: What are the roots of the equation x^2+9=0 I got x=+-3i,can someone explain?
Click here to see answer by tutor_paul(519)

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