The expression written is correct
How to show the expression is correct
According to the problem, we have that
5 over 8 to the power of 2 = 25 over 64
Rewriting in figures
(5/8)² = 25/64
(5/8)² is solved as follows
= (5 * 5) / (8 * 8)
= 25/64
So, we can say the expression is correct