What are the values of x where f(x)<0

Question

Let f(x)=(x−7)^2(x+6)^3

What are the values of x where f(x) < 0

Answer 1

(x - 7)² > 0

For the product f(x) < 0

(x + 6)³ < 0 requiring

x + 6 < 0

x < -6