Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 814095: Hello, I'm trying to help my son with a community college math problem. Here is the question on his homework. Please help us!

We have found, in the first equation that x= - 1. We are at a loss as to what the other two equations mean and need?
Appreciate any and all help.
Kymberly
Click here to see answer by josgarithmetic(39613)

Question 814163: Solve the equation 12x^2 - 23x + 8 = -2
Write in set notation.
Click here to see answer by richwmiller(17219)

Question 813967: Please show mw how to solve for r in the given equation. A=P(1+r)(1+r) if A=2420 and P=2000
Click here to see answer by TimothyLamb(4379)

Question 813700: Find the x and y-intercepts
f(x)=2x^2-x+2
Click here to see answer by TimothyLamb(4379)

Question 813699: Find the x-intercept and y-intercept for (x)
f(x)=x^2-8x+13
Click here to see answer by TimothyLamb(4379)

Question 813698: Find the vertex, the line of symmetry, the max or min value of the guadratic function, and the graph function
f(x)=4x^2-8x+6
Click here to see answer by TimothyLamb(4379)

Question 813697: Find the vertex and the axis of symmetry and graph the function
f(x)=x^2-9x
Click here to see answer by TimothyLamb(4379)

Question 814358: Determine the equation of the quadratic function that passes through
(5, 12)
and has zeroes of {2+sqrt(3)}and
{2-sqrt(3)}. Express your final answer in standard form.

Click here to see answer by richwmiller(17219)

Question 813696: For the quadratic function, use the vertex and line symmetry to graph the function
f(x)=x^2+4x-2
Click here to see answer by TimothyLamb(4379)

Question 814416: -6 2/5 x2 + 7 1/5 x - 3 1/5 = 0
A x = {-2 +- i[SQRT(13)]}/2
Bx = {-6 +- i[SQRT(47)]}/16
Cx = {9 +- i[SQRT(21)]}/-2
Dx = {7 +- i[SQRT(126)]}/-2
E x = {-9 +- i[SQRT(47)]}/-16
F x = {2 +- i[SQRT(126)]}/-6

Click here to see answer by Alan3354(69443)

Question 814412: -57 3/5 x2 + 3 3/5 x = -39 3/5 x2 - 7 1/5 x + 14 2/5
A x = {2 +- i[SQRT(75)}/10
Bx = {3 +- i[SQRT(71)]}/-10
Cx = {-3 +- i[SQRT(57)]}/7
Dx = {-3 +- i[SQRT(71)]}/-10
E x = {-2 +- i[SQRT(75)]}/-7
F x = {2 +- i[SQRT(39)]}/14
Click here to see answer by Alan3354(69443)

Question 814414: 3x2 + 2 1/2 x = -2
A x = {-5 +- i[SQRT(71)}/12
Bx = {5 +- i[SQRT(71)]}/12
Cx = {-2 +- i[SQRT(12)]}/7
Dx = {2 +- i[SQRT(17)]}/-7
E x = {-3 +- i[SQRT(17)]}/12
F x = {3 +- i[SQRT(71)]}/-12

Click here to see answer by Alan3354(69443)

Question 814411: -6 2/3 x2 + 1 1/3 x = 2/3
A x = (-1 +- 10i)/3
Bx = (-1 +- 3i)/10
Cx = (1 +- 3i)/-10
Dx = (-1 +- 3i)/-10
E x = (-1 +- 10i)/-3
F x = (2 +- 3i)/6
Click here to see answer by Alan3354(69443)

Question 814427: solve the quadratic equation
4y^2-25y-21
Click here to see answer by TimothyLamb(4379)

Question 814444: Solve quadratic x2=-9+10

Click here to see answer by Alan3354(69443)

Question 814453: A frog leaps 2 feet. The highest point in the jump is 6 inches. Assume the frog starts at (0,0). What quadratic function models the path of the jump? Specify the units you use.
Click here to see answer by josmiceli(19441)

Question 814483: Hi,
I been trying to solve this problem but I can't find the right formula to do it. I tried A-1/2b*h but I don't get the answer right. Would you help me please?
Thank you
the face of the triangular concrete panel has an area of 45 square meters and its base is 3 meters longer than twice its height. find the length of its base
Click here to see answer by TimothyLamb(4379)

Question 814482: the face of the triangular concrete panel has an area of 45 square meters and its base is 3 meters longer than twice its height. find the length of its base
Click here to see answer by TimothyLamb(4379)

Question 814765: Use the Quadratic Formula to solve the equation.
[ -2x^2 - 5x + 5 = 0 ]
A.
B.
C.
D.
Click here to see answer by TimothyLamb(4379)

Question 814610: x^2+x+1 and 2x^2+8
Find the zeros of each function by using the quadratic formula.
Click here to see answer by TimothyLamb(4379)

Question 814812: 121x^2-49 In quadratic expressions i am trying to find the 4 digits to equal the expression to the right.
Click here to see answer by richwmiller(17219)

Question 814809: How to solve something that has values a=0.05 b=0 and c=6, i need help ASAP
Click here to see answer by TimothyLamb(4379)

Question 814809: How to solve something that has values a=0.05 b=0 and c=6, i need help ASAP
Click here to see answer by DrBeeee(684)

Question 814815: Two cars travel at uniform rates of speed over the same route a distance of 180 ml. One goes 5 mph slower than the other and takes 1/2 hr longer to make the run. How fast does each car travel?
I JUST CANT PLOT THE EQUATIONS TO SOLVE THIS QUADRATIC PROBLEM.PLEASE, HELP.
Click here to see answer by ankor@dixie-net.com(22740)

Question 815097: if (-2,7) is the maximum point for the graph of y=-2x^2-4bx+k FInd the value of k?
Click here to see answer by josgarithmetic(39613)

Question 815127: Please help me Factorise the following question?
x^2+4x-21
Click here to see answer by Alan3354(69443)

Question 814828: Find the exact values of the solutions of the equation that are in the interval [0,2pi)
2tan(t)-sec^2(t) = 0
Click here to see answer by jsmallt9(3758)

Question 815213: How to convert an equation in standard form to factored form ?
This equation in standard form is y=-2x^2+12x-4
in vertex form, it's y= -2(x-3)^2+14
So how to write it in factored form /?
Thanks for any help.
Click here to see answer by josgarithmetic(39613)

Question 815212: For which value of b will the quadratic function below have an x-value of 6 at the minimum ?
f(x)=x^2-2bx+7
Any help will be great, thanks.
Click here to see answer by josmiceli(19441)

Question 815207: Find the function rule.
1. x| -3| -2| -1| 0| 1| 2| 3
f(x)| 10| 5| 2| 1| 2| 5| 10
2. x| -6| -4| -2| 0| 2| 4| 6
f(x)| 71| 31| 7|-1| 7| 31| 71
Click here to see answer by Edwin McCravy(20054)

Question 815263: Please help me solve this equation:
A triangle has a height of 2x and a base of 7-4x
What is the maximum area of the triangle?
(If somehow you can use quadratic formula to solve this that would be much appreciated)
Thank you so much!
Click here to see answer by Alan3354(69443)

Question 815710: [ if x is a positive integer, what is the least value of x^2-2x+3? ]
Click here to see answer by TimothyLamb(4379)

Question 815725: Solving Problems with Quadratic Equations
21. An open-topped box is to be made from a rectangular piece of tin measuring 50 cm by 40 cm by cutting squares of equal size from each corner. The base area is to be 875 cm^2.
a) Draw a diagram representing the information.
b) What is the side length of the squares being removed?
c) What is the volume of the box?
Thanks1!!
Click here to see answer by mananth(16946)

Question 815814: x^2+2x-35 write in vertex form
Click here to see answer by ewatrrr(24785)

Question 816049: The axis of symmetry of a parabola is the line x=4.
The x-intercepts are 10 and -2.
Suppose that the point (12,4) is on the graph;what other point must also be on the graph?
I keep getting the point (4,4) would be on the graph but it is wrong. What am I doing wrong and what point is on the graph? Thanks for any help.
Click here to see answer by TimothyLamb(4379)

Question 816071: A projectile is fired from a cliff 400 feet above water at an inclination of 45 degrees to the horizontal, with a muzzle velocity of 160 feet per second. The height h of the projectile above the water is given by h(x)=-32x^2/(160)^2+x+400, where x is the horizontal distance of the projectile from the base of the cliff. Find the maximum height of the projectile.
Click here to see answer by TimothyLamb(4379)

Question 816089: Please help me factorise x^2+4x-21.
Thank you in advance.
Click here to see answer by Alan3354(69443)

Question 816090: Please help me factorise 3x^2 + x-2.
Thank you in advance.
Click here to see answer by Alan3354(69443)

Question 816090: Please help me factorise 3x^2 + x-2.
Thank you in advance.
Click here to see answer by algebrahouse.com(1659)

Question 816088: Please help me Expand and simplify (2x-3)(2x+3) Thank you
Click here to see answer by Alan3354(69443)

Question 816087: Please help me Expand and simplify (3-2x)(3x+1) Thank you
Click here to see answer by jim_thompson5910(35256)

Question 816087: Please help me Expand and simplify (3-2x)(3x+1) Thank you
Click here to see answer by algebrahouse.com(1659)

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