Question

Jane evaluates x2-3x+5 for x=-2 below.

Step 1: (-2)²-3(-2)+5
Step 2: -4+6+5
=
Step 3: = 7
What, if any, was Jane's mistake?
Jane made no mistakes.
O Jane incorrectly evaluated (-2)² in step 2.
Jane incorrectly added the terms in step 3.
O Jane incorrectly substituted in x=-2 in step 1.
K

Answer 1

Answer: Jane incorrectly evaluated (-2)² in step 2.

Explanation:

`(-2)^(2)=4`, not -4.