Question

Find the zeros for 0 = x2 + 3x - 18 :

x = -3 and x = 6
x = 3 and x = -6
x = -2 and x = 9
x = 2 and x = -9
*work must be shown to receive credit*

Answer 1

x = 3 and x = -6

Explanation:

The zeros must have a product equal to the constant in the equation (-18). The offered answer choices all do, so that doesn't help find the right answer for this question.

The zeros must have a sum that is the opposite of the x-coefficient. That is the case only for ...

x = 3 and x = -6