Question

The Quadratic when written in factored form is (x-3)(x+9)=0. What are the roots?
3 and 9
-3 and 9
3 and -9
-3 and -9

Answer 1

Set both equal to 0
(x-3) = 0
x = 3
(x+9) = 0
x = -9
So 3 and -9