Questions on Algebra: Quadratic Equation answered by real tutors!

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Question 729504: I don't understand how to continue this problem. The problem is:
10x^2+10=8-6x
I know that I have to subtract the 8 then the -6x to get 0
I got:
10x^2+6x+2=0
From there, would I have to do the quadratic formula? Because the number you have to square root it by is a negative number and we haven't learned that yet. I tried factoring but I got:
5x^2+3x+1=0
What do I do from here?
Click here to see answer by MathLover1(20849)

Question 729512: Please help me understand this:
(x+9)^2=64
I tried this:
(x+9)^2=64
x^2+81=64
I'm not sure what to do from here.
Do you subtract 81 from both sides or subtract 64?
If you subtract 81 then it will be x^2=-17; how do I solve this?
I cannot use the quadratic function because the number you have to square root it by is a negative number and we haven't learned that yet so I don't think that is right.
Click here to see answer by MathLover1(20849)

Question 729502: I have a question about quadratic equation. I know if you need to square a negative number then it will be that number with an I at the end but we haven't learned that yet so I'm not sure if I'm doing the problem right. Here's what I'm doing:
4x^2-6x+2=0
6 plus or minus square root of (-6^2-4(4)(2)over 2(4)
6 plus or minus square root of (-36-72) over 8
6 plus of minus square root of (-108) over 8
Can you tell me what I am doing wrong? Or would the problem be considered non solvable?
Click here to see answer by KMST(5328)

Question 729712: I need to find the equation of the quadratic function. I need to express my answer in the form P(x)=ax^+bx+c. The vertex is (-1,-4); through (5,104). I have no idea how to do this. Please help! Thanks!
Click here to see answer by nerdybill(7384)

Question 729636: let k be an integer and p is a prime such that the quadratic equation x^2+kx+p=0 has two distinct positive integer solutions. The value of (k+p)=,,?
Click here to see answer by ankor@dixie-net.com(22740)

Question 729742: Solve the following system of equation,graphically:y=3x+6
y= -x-2
X. /. Y. X. / Y.
Click here to see answer by mananth(16946)

Question 729822: The diagonal of a rectangle is 1m less than twice the length of one of the sides. The other side is 5m long. What is the diagonal
Click here to see answer by nerdybill(7384)

Question 729964: what are the two roots for the equation -x^2+8x-7=0
Click here to see answer by hoomanc(14)

Question 729987: plot F(x) and g(x) on the same graph.
do not use a t-table
f(x)=x^2+2x+3 g(x)=x^2-3x-9
Click here to see answer by lynnlo(4176)

Question 729978: Hello, I need help solving this equation please. It is supposed to be written in quadratic form, but I do not know how to write it out either.

Click here to see answer by Alan3354(69443)

Question 729922: Compare the graph f(x) with the graph of y=x^2, f(x)=-3x^2
Graph is reflected across y-axis and wider
Graph is reflected across x-axis and narrower
Graph is reflected across y-axis and narrower
Graph is reflected across x-axis and wider
Thank you for your help.
Click here to see answer by lynnlo(4176)

Question 730011: Compare the graph f(x) with the graph of y=x^2, f(x)=-3x^2
Graph is reflected across y-axis and wider
Graph is reflected across x-axis and narrower
Graph is reflected across y-axis and narrower
Graph is reflected across x-axis and wider

Thank you for your help.

Click here to see answer by lynnlo(4176)

Question 730001: Hello, I need help with solving this please. The question asks me to write this in quadratic form.
Click here to see answer by lynnlo(4176)

Question 729950: Which model is most appropriate for the data set?
(-1,20),(0,10),(1,5),(2,20)
Linear
Exponential
Quadratic
No solution
Click here to see answer by lynnlo(4176)

Question 730045: how do you change 3(x+1.33333333333333)(x+7) to a fractional coefficient
Click here to see answer by lynnlo(4176)

Question 730045: how do you change 3(x+1.33333333333333)(x+7) to a fractional coefficient
Click here to see answer by MathLover1(20849)

Question 729928: If Height= -16t^2+75t+4.how long would it take before the ball hits the ground? Round to the nearest hundredth.
Click here to see answer by stanbon(75887)

Question 730217: what is the roots of the function

Click here to see answer by richwmiller(17219)

Question 730485: I need help in writing a word problem involving a quadratic function. And I need to explain it in terms someone not in class could understand it, please. I am in the home stretch of my class and would really appreciate the help. Thank you
Click here to see answer by MathLover1(20849)

Question 730650: What are the solutions of the quadratic equation below?
2x2 - 2x - 9 = 0
Click here to see answer by stanbon(75887)

Question 730725: how to solve quadratic equations with all fractions
Click here to see answer by ankor@dixie-net.com(22740)

Question 730772: T^2=5t
Click here to see answer by lynnlo(4176)

Question 730817: Find solutions of the equation 4x^2+27x=40
Click here to see answer by richwmiller(17219)

Question 730824: Okay so the problem is...
3x^2+10x+5=0
I have to solve with the quadratic formula.
The answer ends up being -5(+or-)the square root of 10 all over 3.
I need help with showing the work.
I have no clue how to get the answer.
Thank you so much.
Click here to see answer by checkley79(3341)

Question 730886: 3(x+1)^2
Click here to see answer by jim_thompson5910(35256)

Question 730987: find the minimum value of y in the equation y=3x^2-36x+112
Click here to see answer by lwsshak3(11628)

Question 731269: find the largest solution for the equation 2x(x+2)-5(x+2)=0
Click here to see answer by MathLover1(20849)

Question 731332: a basketball player shoots the ball with an initial upward velocity of 20ft/s. the ball is 6ft above the floor when it leaves her hands how long will it take for the ball to reach the rim of the basket 10ft above the floor?

Click here to see answer by Alan3354(69443)

Question 731556: Solve for roots, axis of symmetry, and vertex
-x^2+4x-3
Click here to see answer by MathLover1(20849)

Question 731727: x+3/x-2 - 1-x/x =17/x
Click here to see answer by mananth(16946)

Question 731778:
Which model is most appropriate for the data set?
(�1, 20), (0, 10), (1, 5), (2, 20) (1 point)linear
quadratic
exponential
none of the above

Click here to see answer by stanbon(75887)

Question 731857: An object is thrown upward from the top of a 96-foot building with an initial velocity of 80 per second. The height h of the object after t is given by the quadratic equation h=16t+80t+96
When will the object hit the ground at when the time is how many seconds?
Click here to see answer by josmiceli(19441)

Question 731868: Hello I'm kind of confused on how to solve this; What are the solutions to the equation I don't know how to turn this into a quadratic equation to use with the quadratic formula.
Thanks.
Click here to see answer by richwmiller(17219)

Question 731923: Multiply every term in the equation 2x^2 + 10x + 12 = 0 by a number other than 0 that has not been used in this discussion thread already, and solve for x by factoring.
These numbers can not be used: 0, 1, 4, 6,

Click here to see answer by stanbon(75887)

Question 732022: Writing an equation for a parabola in the form y= a(x-h)^2 + k with given information.
1. It gives you :
with y- intersept 10, x- intercept 2, and equation of axis of symmetry x-3=0

how would i find a and k?
Click here to see answer by lwsshak3(11628)

Question 731981: X� - 6X + 7 = h(2X � 3) . Find the value of h

Click here to see answer by checkley79(3341)

Question 731924: Multiply every term in the equation 3x^2 + 2 = 77 a number other than 0 that has not been used in this discussion thread already, and solve for x by applying the square root property.
These numbers can not be used: 0, 1,

Click here to see answer by KMST(5328)

Question 731927: Multiply every term in the equation 3x^2 � x - 2 = 0 a number other than 0 that has not been used in this discussion thread already, and solve for x by applying the quadratic formula.
These numbers can not be used: 0, 1, 3, 6,

Click here to see answer by lynnlo(4176)

Question 731839: use the quadratic equation to solve this equation. if necessary round to the nearest hundredth.
5y^2-8y=2

Click here to see answer by lynnlo(4176)

Question 732313: what is the constant term that needs to be added to the given expression to make it a perfect square trinomial x^2-6x
Click here to see answer by lynnlo(4176)

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