posted by Jessica .
I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly?
1.x^2 + 2x-2x=x^2-4)
the first step should be x^2+2x-2x-4 = x^2-4(I forgot to put the (-4)
So far, so good.
(x^2-4)(x-4) = x^3 - 4x^2 - 4x + 16
You don't need an equation, just the polynomial.
Is that in simplest form or am I suppose to do something else with it? It seems too easy-