Question

Evaluate the expression for the given value of the variable |-4b-8|+|-1-b^3|+2b^3;b=-2

Answer 1

[-4(-2)-8]+[-1-(-2)^3]+2(-2)^3

(8-8)+(-1+8)-64

7-64

57

Answer 2

The value of the expression for b=-2 is -9.

Explanation:

Consider the provided expression.

`|-4b-8|+|-1-b^3|+2b^3`

We need to solve the expression for b=-2

Substitute the value of b in the provided expression.

`|-4(-2)-8|+|-1-(-2)^3|+2(-2)^3`

`|8-8|+|-1-(-8)|+2(-8)`

`|0|+|-1+8|-16`

`|0|+|7|-16`

`7-16`

`-9`

Hence, the value of the expression for b=-2 is -9.