Question

Simplify
a2 (a3 + a - 1) + 7 and find its value for a = -2 and a = -1.

Answer 1

Answer:

let a = -2

-2²(-2³+(-2)-1)+7

= 4(-8-3)+7

= 4(-11)+7

= -44+7

= -37

let a = -1

= -1²(-1³+(-1)-1)+7

= 1(-3)+7

= -3+7

= 4

hope this helps you !!!