Question

How do you evaluate `4x^2 - 2x + 15` when `x = -4`?

Answer 1

The value of the expression is 71.

Explanation:

For the equation `4x^2-2x+15` we can evaluate this for `x=-4` by plugging -4 in for the `x` variable

`4(-4)^2-2(4) +15`

`4(16) -8+15`

`64+7`

`71`