Question

Evaluate the expression when n=-3.

Answer 1

`-10`

Explanation:

The given expression is

`n^2+5n-4`

We want to find the value of this expression when
`n=-3`.

We just have to put
`-3` wherever we see
`n` in
`n^2+5n-4`.

When
`n=-3` is substituted, we get,

`=(-3)^2+5(-3)-4`

This will give us,

`=9-15-4`

We simplify to get,

`=-10`