I have to expand and simplify 3p(p-q)

Question

I was able to get it to 3p^2-3pq, but I do not understand how to simplify. If possible, please add working out because am unsure of how to simplify.

Answer 1

That's basically it.  There are no like terms that you can combine.  p² can't be combined with pq.  So you've gone as far as you can.