Question

This may seem like a simple question. Expanding brackets are usually easy. But, how do you do this?

Answer 1

Here you use the FOIL (first, outer, inner, last) method to distribute everything.
7f-6-7f^2+6f
Now combine like terms and put it in the right format
-7f^2+13f-6

Hope that helps and feel free to ask any questions.