Question

Evaluate 4x^3 + 2 for x

Answer 1

4(-1)^3 + 2 = 4(-1) + 2
= -4 + 2
= -2

Answer 2

Work:4x^3+2
X=-1
Plug in x
4 (-1)^3+2
4 (-1)+2
-4+2
-2
Answer: -2 (D)
Check your work: -2=4x^3+2
-2 both sides
-4=4x^3
÷4 both sides
-1=x^3
(Square root by 3) both sides
X=-1

Answer is correct