How would I solve this? Help me, thank you.

Answer:
since they said ‘when’ x = -2
just substitute -2 for x
x^3 - x + 4
substitute to get
-2^3 - (-2) + 4
which becomes
-8 + 2 + 4 = -8+6 = -2
Answer:
C, -2
Step-by-step explanation:
-2 x -2 x -2 = -8
-8- -2 = -8 + 2 = -6
-6+4=-2