Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 273231: Is theI tried solving this problem: p^2 + 8p + 16 = 0 using the quadratic formula and got -4 for the answer. My teacher mark the problem wrong. Can you help me solve it
Click here to see answer by CharlesG2(828)

Question 273268: Can someone please help me with this problem?
Multiply: 3y^2+13y+14 divided by y^2+3y+2 * 2y^2-3y-2 divided by 3y^2+22y+35

This is what I came up with. Is this correct?
(y+2)(3y+7)divided by (y+2)(y+1) * (y-2)(2y+1) divided by (3y+7)(y+5) equals to (y-2)(2y+1) divided by (y+1)(y+5)
Click here to see answer by stanbon(57307)

Question 273257: Please help me solve this equation: .
& HOW DID YHU SOLVE IT I DONT UNDERSTAND AT ALL ! :(
Click here to see answer by jim_thompson5910(28579)

Question 273284: Solve the equation and check your solutions.
(x-1)(x^2+10x+24)=0
This is what I have tried
x-1=0
x=1
x^2+10x+24=0
x^2 +10x-6-4

Click here to see answer by jim_thompson5910(28579)

Question 273334: I need to know the answer and how you found the answer of 5x-3=4 and 2x+8=14-x
Click here to see answer by stanbon(57307)

Question 273326: 2x^2-9x+9=0
Click here to see answer by jim_thompson5910(28579)

Question 273349: Analyzing the motion of a projectile. A projectile is fired from a cliff 200 feet above the water at an inclination of 45 degrees to the horizontal, with a muzzle velocity of 50 feet per second. The height h of the projectile above the water is given by
h (x)= -32 x^2/ (50)^2 + x+ 200
When the height of the projectile is 100 feet above the water, how far is it from the cliff?
Click here to see answer by Alan3354(30993)

Question 273618: A rectangle has length 6cm greater than its width. Find its width given that its area is 91cm^2
Click here to see answer by bobdabuildr(27)

Question 273660: Solve using the quadratic formula. Approximate answers to the nearest tenth. x2+3x+2=0
Click here to see answer by richwmiller(9135)

Question 273701: Place the equation in standard form of an quadratic equation
6+4/x-1=5/x-3
Click here to see answer by solver91311(16877)

Question 273743: The equation is c^2-5c = 0. I've tried to solve using c^2-5c+0 and by factoring out the "c" using c-5=0, but can't seem to get the correct answer. Thanks for your help!!
Click here to see answer by jim_thompson5910(28579)

Question 273827: 5x^2-32x-21=0
Click here to see answer by jim_thompson5910(28579)

Question 273826: 4x^2-15x+9=0
Click here to see answer by jim_thompson5910(28579)

Question 273915: 18x-16 =0:
Click here to see answer by reddrosa(2)

Question 273955: please help me solve this word problem: two pipes working together drain a water holding tank in 6 hours. if used alone to empty the tank, one takes 2 hours longer than the other. how long does each take to empty the tank if used alone?
Click here to see answer by ankor@dixie-net.com(15649)

Question 273993: If
Find the following:
f(x)<0

f(x)>0
Click here to see answer by edjones(7569)

Question 270064: Solve the equation for x. 5x - 3 = 4 - 3x
Click here to see answer by richwmiller(9135)

Question 270067: Combine like terms where possible. 8y^4 - 3y^4
Click here to see answer by richwmiller(9135)

Question 274057: Please solve x2+7x-2=0. Not sure if I got the right answer.
Click here to see answer by Theo(3458)

Question 274157: 9x+9y=27
Click here to see answer by Alan3354(30993)

Question 274209: Solve by completing the square.
3x^2-3x-6=0
Click here to see answer by edjones(7569)

Question 274236: Find the discriminant of this equation
8x2+5x+6=0
Click here to see answer by checkley77(12569)

Question 274307: write the equation y=a(x-h)^2+k with the given.
with a y-intercept 10, x-intercept 2, and equation of axis x-3=0
Click here to see answer by stanbon(57307)

Question 274307: write the equation y=a(x-h)^2+k with the given.
with a y-intercept 10, x-intercept 2, and equation of axis x-3=0
Click here to see answer by solver91311(16877)

Question 274322: The roots of the equation 2x squared-10x+8=0 represent the dimension of the rectangle. what is the area of the rectangle
Click here to see answer by jim_thompson5910(28579)

Question 274169: Please help! I am confused on how to work this problem.
Give the equation of a line perpendicular to the line y = -8x + 8 having the y-intercept 2 units below the y-intercept of the given equation. At what point the two equations cross each other?

Click here to see answer by ankor@dixie-net.com(15649)

Question 274459: the discriminant of a quadratic equation is 35, are the roots
1. equal,
2. rational,
3. imaginary
?
thank you
Click here to see answer by scott8148(6628)

Question 274541: A pool can be filled in 12 hours if water enters through a pipe alone or in 30 hours if water enters through a hose alone. If water is entering through the pipe and the hose, how long will it take to fill the pool?
Click here to see answer by richwmiller(9135)

Question 274540: Able Movers charges $85 plus $40 per hour to move households across town. Their competitor charges $60 per hour for the same move across town. For what length of time is their competitor more expensive?
Click here to see answer by richwmiller(9135)

Question 274543: Determine the values of x for which the following expression will be undefined (i.e., the result is division by zero)
5/3x^2-75
Click here to see answer by Theo(3458)

Question 274505: The squares of three consecutive odd numbers total 8 more than nine times the sum of the three numbers. Find the numbers?
Click here to see answer by checkley77(12569)

Question 274585: y=x^2-2x-4
Click here to see answer by dabanfield(803)

Question 274717: solve the equation by completing the square x2+3x-9=0.

Click here to see answer by stanbon(57307)

Question 274639: A bridge is built in the shape of a parabolic arch. The bridge has a span of 50 metres and a maximum height of 40 metres. Find the height of the arch 10 metres from the center.
Please & Thank you, i can't even begin to think about how to answer this question.
Click here to see answer by ankor@dixie-net.com(15649)

Question 274884: x squared - 4x = 0

Click here to see answer by JBarnum(2044)

Question 274915: what is the discriminant of 12x^2+3x+8=0
Click here to see answer by JBarnum(2044)

Question 274883: My son has 2 problems.
(1) A boy is mowing a field 40 rods and 20 rods rectangular. How wide a border must he cut in order that 3/4 of the mowing will have been completed?
(2) Solve for x and y. 3X + 8y=-5 and x^2- 2XY=12.
Thank you.
Click here to see answer by ankor@dixie-net.com(15649)

Question 274917: Maximizing Revenue: A large hotel is condidering giving the following froup discount on room rates: the regular price of $120 decreases by $2 for each room rented. For example, one room costs $118, two rooms cost $116 x 2=$232, three rooms cost $114 x 3=$342 and so on. a)Write a formula for a function R that gives the revenue for renting x rooms. b)Sketch a graph of R. What is a reasonable domain? c)Determine the maximum revenue and the corresponding number of rooms rented.
Click here to see answer by ankor@dixie-net.com(15649)

Question 275248: Can someone explain how to solve the following problem?
2x^2 + 1 = 5x
Click here to see answer by jim_thompson5910(28579)

Question 275246: Can someone please help with the following:
x^2 - 8x + 5 = 0
Click here to see answer by jim_thompson5910(28579)

Question 275252: Can someone explain how to solve the following problem with finding zeroes?
f(x) = x^2+6x+5
Click here to see answer by jim_thompson5910(28579)

Question 275262: Can someone help with the following problem with finding the zeroes?
f(x) = 5x^2 - 2x - 1
Click here to see answer by jim_thompson5910(28579)

Question 275262: Can someone help with the following problem with finding the zeroes?
f(x) = 5x^2 - 2x - 1
Click here to see answer by stanbon(57307)

Question 275245: Can someone help me solve the following problem.
3x^2 + 6 = 10
Click here to see answer by checkley77(12569)

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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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