I need help with number 12

Answer:
150
Step-by-step explanation:
-(-4)^2 + 7(-2)^4 - 2(-3)^3
-16 + 112 - 2(-27)
; -16 + 112 + 54
;150
Answer:
150
Step-by-step explanation:
Substitute the given values for a, b and c into the expression
- (- 4)² + 7[tex](-2)^{4}[/tex] - 2[tex](-3)^{3}[/tex]
= - 16 + (7 × 16) -2(27)
= - 16 + 112 + 54
= - 16 + 166
= 150