Question

2/5^-3 × 2/5^5 please tell me how to solve

Answer 1

(2/5)^-3*(2/5)^5

a^m*a^n = a^m + n (According to laws of exponents)

(2/5)^-3 + 5

(2/5)^2

= 4/25

Hope it helps :)

Answer 2

$\frac{2}{5} ^{ - 3} \times \frac{2}{5} ^{5 } \\ \: \: \frac{2}{5} ^{ - 3 + 5} \\ \frac{2}{5} ^{2}$