You'll do the same sort of thing you did for (c), only more so. If nothing else, show us your work for (c), so we can use that as a start.Hi, I would like to get some help on question d.
I don't even know where to start
You were correct right up until the last step. You can't do that. You are saying something like \(\displaystyle 2^4 * 3^5 = 6^9\). That's not correct is it?
Question says simplify so do I just leave it as 5^(-3n - 3)*3^(n + 2)? Is it not possible to multiply these then?
The answer is the LHS of your last line. You can't do anything more. To simplify the expression. It's important to know when to stop.
Thanks but how do you know 3^(n+2) is the numerator and not 5^(3n+3)?