Question

If `f( x ) = x - 4 and g ( x ) = x ^ { 2} - 1`, what is `f ( - 1) - g ( - 2)`?

Answer 1

`f(x)=x-4`
`f(-1)=-1-4=-5`

`g(x)=x^2-1`
`g(-2)=(-2)^2-1=4-1=3`

`-5-3=-8`