Question

Evaluate 7x - (2x)2 + x 3 for x = -2.

Answer 1

$7x - (2x)2 + {x}^{3}$

$7x - 4x + {x}^{3}$

$3x + {x}^{3}$

$3( - 2) + { (- 2)}^{3}$

$- 6 + - 8$

$- 14$