Question

Use the graph of the function y = (x + 3)(x − 2) to find the solutions of the quadratic equation 0 = (x + 3)(x − 2).



The solutions of the quadratic equation 0 = (x + 3)(x − 2) are

–6 and 0.
–4 and 3.
–3 and 2.
–2 and 1.

Answer 1

Set each factor equal to zero: x + 3 = 0 → x = −3, and x − 2 = 0 → x = 2.
So the solutions are −3 and 2.