The problem is: (3x^2+5x+4)(-5x^2-x+3)

Would I distribute 3x^2 to -5x^2, then to -x, and then to 3, and then do the same with 5x and 4?

I'm just kinda confused because there are "+" signs within the parenthesis, but not in between them. That's throwing me off for some reason. I can't remember how you do all the different types of these problems (like ones that are multiplication, versus adding, etc...)