Question

Given a polynomial f(x), if (x + 3) is a factor, what else must be true?

f(3) = 0

f(-3) = 0

f(0) = 3

f(0) = -3

Answer 1

Please help!

Answer 2

if \(x+3)\) is a factor then it must look like
\[f(x)=(x+3)(something )\] and so
\[f(-3)=(-3+3)(something)=0\times something =0\]