Question

What’s the evaluated expression?
4b +2-b2 for b = -2

Answer 1

-10

Explanation:

4b +2-b^2

Let b = -2

4*(-2) +2 - ( -2)^2

Using PEMDAS, do the exponent

4*(-2) +2 - 4

Multiply

-8 +2 - 4

Add and subtract from left to right

-6 -4

-10