Question

What is the value of the expression below when z=9?
z^2 +9z+10

Answer 1

Explanation:

1) Substitute (replace) every z with 9

`(9)^2+9(9)+10`

2) Solve

`(9)^2+9(9)+10\\81+9(9)+10\\81+81+10=172`

(Extra Breakdown Below)

1) Calculate Exponents (9)^2 = 81

2) Multiply 9(9) = 81

3) Add 81+81+81 = 172