Answer:

Explanation:
What you need to know here is that when a variable is brought to the numerator (and vice-versa) its power becomes negative. So when we bring c^2 to the top, it becomes c^-2
Another thing to know is that when two of the same variable is multiplied together, you add the powers. So c^4 * c^-2 becomes c^2, because 4-2 = 2.
Using both of these rules, let's solve:

And that is our answer :)
(*note: if the answer is in fractions, just keep the 12/15 instead of turning it into a 0.8)