Please answer all parts below.

Answer:
Step-by-step explanation:
the law of exponents says that
1/x = x^-1
so by that
lets move the 5^-1 to the denominator it will be like
1/(5^1)(5^1)
and by law of exponents says also that x*x=x^2
so it's 1/5^2
so the answer here was
1/25
or if you want to apply law of exponent it is
25^-1