Question

Find The Value Of expression : -7x +17x³⁻2x⁵, when x=-4

Answer 1

-7×(-4)+17(-4)³-2(-4)³

=28-1088+128

=156-1088

=-932

Answer 2

Answer:

$-7x +17x³⁻2x⁵$

$-7 \times ( - 4) +17 \times ( - 4)³ - 2 \times ( - 4)⁵$

$28 - 1088 +2048$

$28 - 1088 + 2048$

$988$