Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 269533: (x^2)^2-7x^2-8=0
Click here to see answer by drk(1908)

Question 269691: we are going to fence in a rectangular field and we know that for some reason we want the field to have an enclosed area of 75 feet squared. we also know that we want the width of the field to be 3 feet longer than the length. what are the dimensions of the field? round yound your answer to the nearest hundreth.
Click here to see answer by mananth(12270)

Question 269820: Please help me solve this problem by completing the square: .
Click here to see answer by drk(1908)

Question 269829: please help me solve the equation: .
Click here to see answer by drk(1908)

Question 269829: please help me solve the equation: .
Click here to see answer by Alan3354(30993)

Question 269830: Please help me solve the equation: .
Click here to see answer by Alan3354(30993)

Question 269830: Please help me solve the equation: .
Click here to see answer by drk(1908)

Question 269808: Give exact and approximate solutions
(x + 4)^2 = 9
I am unsure of how to solve
Click here to see answer by Alan3354(30993)

Question 269827: Please help me solve using completing the square:
Click here to see answer by Earlsdon(6287)

Question 269844: . Henry invested $12,000 in a new restaurant. When the restaurant was sold two years
later, he received $27,000. Find his average annual return by solving the equation 12,000(1 + r)^2 =
27,000.

Click here to see answer by checkley77(12569)

Question 269843: The perimeter of a triangle is 60 centimeters. One side is 6 centimeters shorter than the second side. The third side is 6 centimeters shorter than triple the length of the first side. Find the length of each side
Click here to see answer by drk(1908)

Question 269918: Given that r and s are roots of the quadratic equation 3(x^2)+1=7x, find (r^3)s+r(s^3), without solving for the roots of the original equation.
Click here to see answer by drk(1908)

Question 270036: A marathon runner runs 6 miles south and then 8 miles east. How far is the runner from the starting point? (Hint: use Pythagorean Theorem)

Click here to see answer by Tobiasz(54)

Question 270067: Combine like terms where possible. 8y^4 - 3y^4
Click here to see answer by Tobiasz(54)

Question 270067: Combine like terms where possible. 8y^4 - 3y^4
Click here to see answer by stanbon(57361)

Question 270064: Solve the equation for x. 5x - 3 = 4 - 3x
Click here to see answer by Tobiasz(54)

Question 270064: Solve the equation for x. 5x - 3 = 4 - 3x
Click here to see answer by Alan3354(30993)

Question 270243: please help
factor completely.
x^2+16x+64

Click here to see answer by Alan3354(30993)

Question 270249: some help please?
factor completely
6c^2-33c+15
Click here to see answer by jim_thompson5910(28595)

Question 270245: how can i factor this completely?
2x^2+7x-15
Click here to see answer by jim_thompson5910(28595)

Question 270244: may i have some help please?
factor completely.
3x^2+6x-24
Click here to see answer by jim_thompson5910(28595)

Question 270291: how can I factor 4x^2+16x+13?
Click here to see answer by jim_thompson5910(28595)

Question 270288: I need to find the derivative of these two questions. Can you please help me?
y= tan^-1 x/2
y= 2square root x subtract 1/2squarerootx
Thankyou.
Click here to see answer by Alan3354(30993)

Question 270397: How can I write the general form of an equation of the line that passes through two points? (1,4) (5,6). Thank you!
Click here to see answer by checkley77(12569)

Question 270400: Please help me figure out how to change quadratic equations from standard form to vertex form!

Thank you!
Click here to see answer by solver91311(16897)

Question 270407: one leg of a right triangle exceeds the other leg by four inches. the hypotenuse is 10 inches. find the length of the shorter leg of the right triangle .
Click here to see answer by Greenfinch(383)

Question 270701: Find all real solutions to each equation:
64. x^2+x+√(x^2+x)-2=0
Would you square all terms to get rid of the sq root over the (x^2+x) first and then solve for x with a 4th power coeffcient? Thanks for your help!
Click here to see answer by stanbon(57361)

Question 270745: What is the number of x- and y-intercepts that quadratic functions may have?
Click here to see answer by solver91311(16897)

Question 270847: I am not sure of how to calculate thw right answer for these two equations/
1) S = -10(2)^2+21(2)+7.
2) S = -10(4)^2+21(4)+7.
Click here to see answer by JBarnum(2044)

Question 270845: ichael discovers that the front car of a vintage roler caoster is a rectangular solid whose height is two feet shorter then its width and whose lenght is twice the width. the car has a volume of 150 cubic feet.
a) write an expression for the car's volume
b) write an equation showing that the car's volume is equal to 150. Rewrite this equation so thatone side is equal to 0.
Click here to see answer by Stitch(352)

Question 270881: How can I solve this kind of equation? Do I solve for t?
"Find the real solutions of each equation."
(Square Root of)5t + 3 (/Square Root) = -2
Click here to see answer by JBarnum(2044)

Question 270887: Which of these quadratic functions has the widest graph?
A.y=1/4x to the second power
B.y=1/2x to the second power
C.y=-x to the second power
D.y=4x to the second power
Click here to see answer by Alan3354(30993)

Question 271022: discriminant of each equation and tell if the solutions are real or imaginary for example how would you do y=x^2+10X-25 also tell how many solutions
Click here to see answer by drk(1908)

Question 271137: How do you solve this quadratic equation???
x squared -17x-9=0
Click here to see answer by Greenfinch(383)

Question 271137: How do you solve this quadratic equation???
x squared -17x-9=0
Click here to see answer by Theo(3464)

Question 271244: Solve graphically. Round solutions to three decimal places, where approporiate.
4x^2-2=3x
Click here to see answer by stanbon(57361)

Question 270643: If you are looking at a graph of a quadratic equation, explain how you determine where the solutions are found?
Click here to see answer by Zyzden(7)

Question 271343: multiply
(b+1/3)(b+1/3)
Click here to see answer by checkley77(12569)

Question 271343: multiply
(b+1/3)(b+1/3)
Click here to see answer by JBarnum(2044)

Question 271355: solve
8/z=9/z-1/z
Click here to see answer by Alan3354(30993)

Question 271355: solve
8/z=9/z-1/z
Click here to see answer by JBarnum(2044)

Question 271342: convert to a decimal
8.66x10^7
Click here to see answer by JBarnum(2044)

Question 271393: how do i do this?? Help please I dont understand! m(2m-16)=12
Click here to see answer by Zyzden(7)

Question 271393: how do i do this?? Help please I dont understand! m(2m-16)=12
Click here to see answer by checkley77(12569)

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