Question

if x =-1 find the value of x cube + 2 x power 6

Answer 1

X cube = -1

2x^6 = 2 * 1 = 2

Ans = 1

Answer 2

$x = - 1 \\ {x}^{3} + 2 {x}^{6} = {( - 1)}^{3} + 2 {( - 1)}^{6} \\ = - 1 + 2 = 1$