Can't work this one out. Can anyone help?
axsquared + bx + c = 0 is the general form of a quadratic equation. Find the values of a, b, c if the equation has roots x=2/3 and x=-1/2?
Basically you need to find a quadratic with those roots.
x = 2/3
3x = 2
(3x-2) = 0
Do similarly for x = -1/2
You get (2x+1) = 0
(3x-2) and (2x+1) are factors of the quadratic.
So multiply them together and you will get something in the form of axsquared + bx + c = 0
By comparing what you get with axsquared + bx + c = 0, you can say what a, b and c are.