Can someone explain to me how to do this exercise?

Given the function f (x) = 3x-2x^2, evaluate and simplify.

1. f (f (-1))

2. f (-1+a) - f (-1)

Hi

You should put into them. I mean

1-This is 2 part. First, you should put f (-1) then you should put what you found.

Solve is:f (-1) = 3 (-1) - 2 (-1) ^2 so - 3-2=-5 then put in other one:if f (-5) : - 15-50=-65

Is it correct?