Final answer:
When x is -3, the expression x² + x is evaluated by squaring x to get 9 and then adding x to get 6 in total.
Step-by-step explanation:
The correct evaluation of x² + x when x is equal to -3 involves two calculations. First, we square the value of x, so when x is -3, we calculate (-3)² which is 9. Secondly, we add the original value of x to this result, so we get 9 + (-3), which equals 6.
Therefore, the expression x² + x evaluates to 6 when x is -3.