Question

if a=15 ,then a5-16a4+16a3-16a2+16a=???​

Answer 1

Step-by-step explanation:

Let a=x.

the expression becomes

$x({x}^{4} - 16 {x}^{3} + 16{x}^{2} - 16x + 16)$

now put x=15 and solve