## Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Remainder = $0$ $(x+3)$ is a factor of $f(x)$ .
The Remainder Theorem states that when a function $f(x)$ is divided by $(x-R)$ , then the remainder will be: $f(R)$. Now, $f(-3)=(3)(-3)^6+82(-3)^3+27= (3)(729)+(82)(-27)+27=0$ The Factor Theorem states that if $f(a)=0$, then $(x-a)$ is a factor of $f(x)$ and vice versa. Therefore, by the Factor Theorem $(x+3)$ is a factor of $f(x)$ .