Question

solve quest 17 please.

Answer 1

Question: 5^(2n) x 5^(3) = 5^9

5^(2n + 3) = 5^9

2n + 3 = 9

n = (9 - 3)/2 = 3

Answer 2

According to property,
a^mXa^n=a^m+n
2n+3 =9