Question

For `n = 2d^2 - 5` when `d = -2`, what does `n` equal?

Answer 1

`color(blue)(n=3`

Explanation:

The expression provided is
`n=2d^2-5`

`d=-2`, substituting the same in the expression:

`n=2 * (-2)^2-5`

`n=2 * 4-5`

`n=8-5`

`color(blue)(n=3`