Naomi, let's think of it this way. Remember that a power to a power means you multiply the two powers. For example, (f5)3 = f15, right?
Working backward, (-32)4/5 = ((-32)1/5)4.
What's the fifth root of -32? Something to the fifth power gives us -32. That would be -2. (-2)5 = -32.
Now, what's (-2)4? That would be 16.
(-32)4/5 = 16
Hope this helps!
Naomi R.
05/03/17