Question

$frac{3^{n+2}*5^{2n}}{75^{n-1}}$

 

 

Помогите позязя!

Answer 1

3^(n+2) * 5^(2n) = 3^n * 9 * 25^n = 75^n * 9

75^n*9/75^(n-1) = 75^n*9/75^n * 75^-1 = 9*75=675