Question

What is the value of the expression 10z2-2z-2 when z=3?

Answer 1

82 is the value of the expression when z = 3

Explanation:

Plug in 3 to the expression.

`10z^(2) -2z - 2\\ 10(3)^(2) - 2(3) - 2`

Then solve the expression.

90 - 6 - 2 = 82

We got 90 when we squared 3 and multiplied that number (9) by 10, resulting in 90.