Questions on Algebra: Quadratic Equation answered by real tutors!

Tutors Answer Your Questions about Quadratic Equations (FREE)

Question 576541: How do you solve for x , y , z
x+5y+5z=-10
x+y+z=2
x+2y+3z=-3
Click here to see answer by solver91311(16897)

Question 576668: x^3=500
Click here to see answer by rfer(12660)

Question 576148: Give an example, show the work, and determine if the example has one, two, or no real solution.
Click here to see answer by richard1234(5390)

Question 576831: 3(x^2-3) = 35x + 19
please use the quadratic formula thankssss
Click here to see answer by ankor@dixie-net.com(15652)

Question 577105: Please help me solve this equation:
Click here to see answer by jim_thompson5910(28595)

Question 577108: Please help me solve this equation:
Click here to see answer by jim_thompson5910(28595)

Question 577104: Please help me solve this equation:
Click here to see answer by jim_thompson5910(28595)

Question 577118: Solve x^2-10x+25=0
Click here to see answer by jim_thompson5910(28595)

Question 577218: how can I do w^2-14w+24=0 for a quadratic formula
Click here to see answer by Alan3354(30993)

Question 577538: x^2-2x-3=5
Click here to see answer by jim_thompson5910(28595)

Question 5549: the width of a rectangle is 3 inches less than its length. The area of the rectangle is 340 square inches. What are the length and widthof the rectangle?
Click here to see answer by ankor@dixie-net.com(15652)

Question 577599: What is the vertex of x-3=2(y+1)^?
What is the vertex of y+1=1/2(x-3)^?
What is the vertex of x=1/2y^-y+3?

Click here to see answer by solver91311(16897)

Question 577587: Factorize A^2+B^2+AB
Click here to see answer by richard1234(5390)

Question 577452: how many quadratic equations are there whose roots when squared gives the same quadratic equation
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Question 577883: -5/3(x+2)^2-1/6 in standard form
Click here to see answer by jim_thompson5910(28595)

Question 577908: I am trying to solve the quadratic equation using the method from India.
I need assistance with each step.
The problem is 2x^2-3x-5=0
There are 6 steps and I have gotten to step 3
Step 1 2x^-3x=5
Step 2 8x^2-12x=20
Step 3 -3 is the original x term, therefore:
8x^2-12x+9=29
Step 4, now I am to take the square root of each side. This is where I am confused, need help here through step 6.
Click here to see answer by stanbon(57357)

Question 578005: Solve.
(x+16)(x-10)(x+7)>0
Click here to see answer by KMST(1868)

Question 578107: Hello, i have been given this maths question, please could you help me solve it. I have tried putting it into a quadratic equation then i realised that it cannot be factorised. The question is:
prove that the line y+x=-2 is a tangent to the curve y^2 = 8x
Thank you
Click here to see answer by Edwin McCravy(8909)

Question 578394: Can someone please help me solve this algebra problem. I set up the problem the best way, I knew how.
1/4 =3- 2x-1/x+2
This problem is suppose to be set up as a fraction 1/4 and 2x-1/x+2
Click here to see answer by stanbon(57357)

Question 578802: In the series 0, 3, 8, 15,__, What is the next number?the next number would be 24 as the difference is 2

Click here to see answer by asthatakkar(1)

Question 579253: what does x equal, using the quadratic formula, for x^2-3x-4=0????
Click here to see answer by nerdybill(6959)

Question 579676: I have k(squared)=49 and I need the steps to working it out along with the answer please...(:
Click here to see answer by richard1234(5390)

Question 580183: I need help with this equations:
1) write y=4x^2-32x+66 in vertex form
2)use the quadratic formula to solve the equation
4x^2-x+3=0
Click here to see answer by dfrazzetto(277)

Question 580406: 2x^2+12x+1=0
Click here to see answer by dfrazzetto(277)

Question 580432: If the graph of the quadratic function h is shifted vertically 4 units downward, then reflected in the x-axis, and then shifted horizontally 3 units to the left, the resulting graph is the parabola f(x) = x^2. What is the rule of the function h?
h(x)= _____________
What is the vertex of its graph?
Click here to see answer by josmiceli(9681)

Question 580484: I need to graph the quadratic function f(x)= -1/2(x+4)^2+6
I've determined the parabola opens down due to the negative coefficient; however, I'm having a problem solving it due to the fraction -1/2. Wouldn't (x+4)^2 be x^2+16?
Click here to see answer by jim_thompson5910(28595)

Question 580522: Whar is the roots? 2x^2+9x-5=0
Click here to see answer by jim_thompson5910(28595)

Question 580560: how do i determine whether a given value is a solution to an equation
for example X^2 - 2x + 15 = 0;3
Click here to see answer by lwsshak3(6508)

Question 580632: 3p^2-7p-40
Click here to see answer by dfrazzetto(277)

Question 580632: 3p^2-7p-40
Click here to see answer by Alan3354(30993)

Question 580660: Page 367 Evaluate each of the following quadratic functions for the given
value of x. Show all your work.
f(x) =x^2 + 5x + 7; f(4)
g(x) =25 -x^2; g(-5)
h(x) = -x^2 +4x-1; h(-2)
f(x) =5x^2 -18;f(0)
g(x) =8x^2 -3x +10; g(2)
h(x) -3x^2 +15; h(10)

Click here to see answer by Alan3354(30993)

Question 580658: 6. Just the Math: Quadratic Function The equation that
you wrote for the area, y=x^2, represents the simplest form of a
quadratic function. A quadratic function is a function of the
form f(x) = ax^2 +bx+c, where a, b, and c are constants with
a=(a line thru the = mark)0. The graph of a quadratic function is a U-shaped graph.
What can you conclude about the rate of change of a quadratic
function? Use a complete sentence in your answer.
7. Identify the values of a, b, and c in each quadratic function
below.
h(x) = x2 - 3x
g(x) = 10 - x^2
f(x) = 2x^2 + 3x+5
f(x) = x^2 - 2x + 8
h(x) =2^2+4x-1
g(x) =x^2 +4

Click here to see answer by richard1234(5390)

Question 581080: I don't quite understand what the question is asking. Could you help me solve this problem?
Directions: Logical Reasoning - Consider the equations and use the quadratic formula to justify the statement.
If is positive, then the equation has two solutions.
Click here to see answer by josmiceli(9681)

Question 581377: What are the final values or solutions for x to this problem: x^2+2x+10=0 where a=1, b=2,=10
Click here to see answer by stanbon(57357)

Question 581391: x2-5x=-6
Click here to see answer by algebrahouse.com(1079)

Question 581610: x^2+6X+7=0
Quadratic Formula
Click here to see answer by jim_thompson5910(28595)

Question 581610: x^2+6X+7=0
Quadratic Formula
Click here to see answer by josmiceli(9681)

Question 581608: Problem: x^2+6x+5=0
1)Factor
2)Completing Square

3) Quadratic Formula

Click here to see answer by stanbon(57357)

Question 581663: I am trying to solve a factoring problem with quadratic trinomials that have a leading coefficient greater than 1. My problem is: (2x^2+14x-10).
I am having trouble finding numbers that multiply to -20 and add to 14. Help would be great! Thank you!
Click here to see answer by jim_thompson5910(28595)

Question 581832: solve. 2x^2=5-3x
Click here to see answer by jim_thompson5910(28595)

Question 581995: Factor.
s^2+14s+49
Click here to see answer by jim_thompson5910(28595)

Question 582057: Hello,
Please help me solve this equation:
Give the exact and approximate solutions to three decimal places.

Click here to see answer by Alan3354(30993)

Question 582171: The number of horsepower, H, needed to overcome a wind drag on an automobile is given by H=0.005s^2 + 0.007s - 0.031, where s is the speed of the car in miles per hour. At what speed will the car need to travel to use 200 horsepower to overcome the wind drag?
I tried this several ways and still came up with 199.32 miles per hour which my teacher says is wrong.
Please help.
Click here to see answer by Alan3354(30993)

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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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