How do you simplify #(5^-2)^-3#?
With practice you could solve this in 1 to 2 lines. I have used a lot more than that to explain things.
This is stating that 5 is raised to the power of 2 but because we have negative 2 we have to invert it ( turn upside down ).
Note that writing as
We now have:
Notice that both the numerator and denominator have this index applied.