Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 249603: (y+5)(y-1)=27
Click here to see answer by checkley77(12569)

Question 249599: A square mirror has sides measuring 2 ft. less than the sides of a square painting. If the difference between their areas is 32 ft.^2, find the lengths of the sides of the mirror and the painting.
Click here to see answer by checkley77(12569)

Question 249662: y = ax^2 + bx + c
Click here to see answer by richwmiller(9132)

Question 249634: The length of a rectangle is 1cm more than twice the width. If the area is 78cm (squared). Find the dimensions. I came up with this so far?
L=2w +1
2w+1(w)=78
2w(squared)+w=78 then
2w(squared)+w - 78 = 0
I factored that as (2w + 13) and (2w - 6) = 0
But then I would be getting W = -13/2 and W = 6
Am I on the right track? I'm supposed to be finding the dimensions of the rectangle.
Thanks
Click here to see answer by richwmiller(9132)

Question 249718: A ball is thrown into the air with an upward velocity of 36 ft/s. Its height h in feet after t seconds is given by the function h = –16t2 + 36t + 9.
a. In how many seconds does the ball reach its maximum height? Round to the nearest hundredth if necessary.
b. What is the ball's maximum height?
Click here to see answer by solver91311(16868)

Question 249876: Evaluate the polynomial for the indicated value of the variable.
-4x3 + 2x2 + 5x – 7 when x = -2
Click here to see answer by solver91311(16868)

Question 249999: a^2-11a+28=0
Click here to see answer by mathitutor(25)

Question 249936: hey!
can you please help me with my homework??
The world's largest hedge maze is in the grounds of an English country house known as Longleat. The rectangle maze has 2.7 km of paths flanked by 16,180 yew trees. The length of the rectangle is 50m more than the width. The area of the rectagle is 6496m(squared). What are the dimensions of the rectangle?
please help me! THANK YOU!
Click here to see answer by ankor@dixie-net.com(15622)

Question 249938: x^2-8x+15=0
how do you solve this problem, and how do you use the discriminant?
Click here to see answer by checkley77(12569)

Question 250166: What solution would you get from 2 and 3 when doing a quadratic equation.
Click here to see answer by solver91311(16868)

Question 250248: sqrt4+10 wrote in a+bi form
Click here to see answer by Alan3354(30935)

Question 250335: Please give co-ordinates of the vertex and sketch graph.
y=x^2+2x+4
Would you show me how it's figured?
Click here to see answer by richwmiller(9132)

Question 250334: How do you graph this equadratic equation by plotting points?
y=(x-5)^2
Click here to see answer by checkley77(12569)

Question 250467: (4x-2)^2=8
Click here to see answer by jim_thompson5910(28476)

Question 249908: (6x3 – 11x2 + 11x – 2) / (2x – 3)
Find the quotient of the polynomials
Click here to see answer by jsmallt9(3296)

Question 250483: 2x squared =22

Click here to see answer by MRperkins(300)

Question 250531: If I already am given the solution of 3, -4, then how do I turn these numbers into a quadratic equation?
Click here to see answer by MRperkins(300)

Question 250564: Graph the quadratic equation
y= -x^2 - 4x - 3
Click here to see answer by richwmiller(9132)

Question 250602: Graph the quadratic equation
y = x^2 + 8x + 7
Click here to see answer by richwmiller(9132)

Question 250586: solving quadratic equations by factoring
x^2 - 8x - 48 = 0

Click here to see answer by richwmiller(9132)

Question 250580: Graph the quadratic equation
y = x^2 + 8x + 7
Click here to see answer by Fombitz(13828)

Question 250611: y = -x^2 + 7x - 2
I need to graph this quadratic function.
I know I will need to use -b/2a and find y, but I am quite confused on how to solve this problem.
Click here to see answer by Fombitz(13828)

Question 250613: y = -x^2 + 7x - 2
I need to graph this quadratic function.
I know I will need to use -b/2a and find y, but I am quite confused on how to solve this problem.
Click here to see answer by Fombitz(13828)

Question 250562: Graph the quadratic equation
y = x^2 + 8x + 7
Click here to see answer by Fombitz(13828)

Question 250828: Write in expanded form
(a-3b)^4

please help me on this problem! I would really appreciate it!
Click here to see answer by College Student(505)

Question 250964: Find the x intercepts
y = x^2 + 4
Click here to see answer by vksarvepalli(154)

Question 250884: Use the quadratic to solve:
D^2 - 117
Click here to see answer by Fombitz(13828)

Question 250961: Solve the equation by completing the square
p^2 + 3p - 9 =0

Click here to see answer by Fombitz(13828)

Question 250963: Solve for r
S = 1/3(pi)r^2h + 4(pi)rh
Click here to see answer by jsmallt9(3296)

Question 251041: how do you create a quadratic equation with only one solution? For example -3?
Click here to see answer by solver91311(16868)

Question 251105: I would really love some help on this problem!!
Use quadratic formula to solve:
x^2 - x = -6
I believe I have to use imaginary numbers but I am not sure how to do so.
Thank you so much in advance!!
Click here to see answer by vleith(2825)

Question 251011: Solve these quadratic equations by factoring.
4x2-25=0
-9x2+12x-4=0
6=x2-x
Click here to see answer by checkley77(12569)

Question 251178: how do I solve (x^2-5x+5)^(x^2-9x+20)=1?
Click here to see answer by stanbon(57205)

Question 251337: y=-x-4x-2

Click here to see answer by richwmiller(9132)

Question 251321: A picture 11 inches by 15 inches is to be mounted on a piece of mat board so that there is an even amount of mat all around the picture. How wide will the border be if the area of the mounted picture is 285 square inches?
Click here to see answer by richwmiller(9132)

Question 251309: Solve the equation.
x(x-3)= 40
Click here to see answer by blwinbbbles(106)

Question 251311: Tom traveled 280 miles east of St. Louis. For most of the trip he averaged 60mph, but for one period of time he was slowed to 10mph due to a major accident. If the total time of travel was 8 hours, how many miles did he drive at the reduced speed?
Click here to see answer by richwmiller(9132)

Question 251312: Solve the equation. Express radicals in simplest form.
x^2 + 3 =52
Click here to see answer by richwmiller(9132)

Question 251310: A polygon has 35 diagonals. How many sides does it have?
Click here to see answer by edjones(7569)

Question 251307: Solve the equation.
15r^2 = 3r
Click here to see answer by edjones(7569)

Question 251343: graph g(x)=2x^2-6x+3
Click here to see answer by checkley77(12569)

Question 251465: Please help me to find the roots of the quadratic equation: w^2+3w-10=0
Thank you.

Click here to see answer by Theo(3458)

Question 251511: x/19 + (2x-4)/19
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, 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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, 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