Question

Jordie was asked to identify the zeros of the function

f(x) = (x – 5) (x + 3). Her answers were –5 and 3. Do you agree or disagree?
Justify her answers or explain why they are wrong.

Answer 1

Disagree.

Explanation:

In order to find zeros, you have to make the parenthesis equal zero. See below.

(x-5)=0

Add five on both sides to get x by itself

x=5.

(x+3)=0

Subtract 3 on both sides to get x by itself

x=-3