Question

one factor of a polynomial p(x) is (x + 7). what is the numerical value of p(-7)

0
-7
1
7

Answer 1

So you can write \(p(x)\) as\[p(x)=(x+7) \ q(x)\]now plug -7 in the equation, you get\[p(-7)=(-7+7) \ q(-7)=0 \times \text{a constant number}=0\]