Answer:
The value of the expression when b=2 is 21.
Explanation:
Consider the provided expression.

We need to find the value of expression for b=2.
Substitute the value of b=2 in the provided expression and simplify as shown.


Now, the absolute value or modulus of a real number "x" is

Use the above rule to solve the expression.



Hence, the value of the expression when b=2 is 21.