Question

What is the equation to the quadratic function that has zeros at -11 and -2?

x2 + 9x - 22 = 0


x2 - 9x - 22 = 0


x2 + 13x + 22 = 0


x2 - 13x + 22 = 0

Answer 1

x^2 +13x+22 =0

Explanation:

Subtract the zero from x

(x- -11) (x- -2) =0

(x+11) (x+2) = 0

Foil

x^2 +2x+11x+22 =0

Combine like terms

x^2 +13x+22 =0