quadratic equations?

Question

Stuck.I have to break this down using quadratic equation?
I foiled my answer down to 4x^2 -100x + 600 = 400^2

Answer 1

first, take the 400^2 to the left side. you now have

4x^2-100x-159400=0

now use the quadratic equation to solve for x.

where a=4, b=-100, c=-159400

you will get fairly large numbers for x....
If you need help with the quadratic equation itself, go to:
http://mathworld.wolfram.com/QuadraticEquation.html

it's a great site.

Answer 2

If by "break this down" you mean you need to find the answers, you need to get all your terms on one side so the equation has the form ax^2 + bx + c = 0. They you can use the quadratic formula ( -b +or- SQR(b^2-4ac))/(2a)