Question

Помогите УМАЛЯЮ СРОЧНО!!

Answer 1

$frac{(3^n+3^{n-1})^2}{9^{n-1}} = frac{9^{n-1}(3+1)^2}{9^{n-1}} =4^2=16$

$frac{(5^n-5^{n-1})^3}{125^{n-1}} = frac{125^{n-1}(5-1)^3}{125^{n-1}} =4^3=64$

$frac{4^{n-2}}{(2^{n-1}-2^{n-2})^2} = frac{4^{n-2}}{4^{n-2}(2-1)^2} = frac{1}{(2-1)^2} =1$