Actually Welcome to the Concept of the Exponents ans Indices.
Since we know that, something inverse is a reciprocal.
that, (a) ^-1 = 1/a and (a^m)^n = a^m*n
so applying this we get as,
Option B.
==> 4^15 . 5^10
Answer: It is a perfect square root! Because 23 is the square root of 529!
Hope this it what you were wanting!
Good luck! ;)
Answer:
7
Step-by-step explanation: