Question

please tell question with explanation​

Answer 1

x = -4

Expression -

$- 7x + {17x}^{3} - {2x}^{5}$

Substituting the value of x in the equation-

$= - 7( - 4) + 17 {( - 4)}^{3} - 2 {( - 4)}^{5}$

$= 28 - 1088 + 2048$

$= 28 + 960$

= 988

Answer 2

SOLUTION

Given,

x= -4

Putting this equation

$- 7x + 17 {x}^{3} - 2 {x}^{5} \\ \\ = > - 7( - 4) + 17( - 4) {}^{3} - 2( - 4) {}^{5} \\ \\ = > 28 + 17 \times (- 64) - 2( - 1024) \\ \\ = > 28 + ( - 1088) + 2048 \\ \\ = > 28 - 1088 + 2048 \\ \\ = > 28 + 960 = > 988$

hope it helps ☺️