3. a ) 1/x =x^-1 и х^-1 =1/x(6 =2*3, 6^4 =2^4*3^4)6^-4 /2^-6*3^-4 ==(2^6 *3^4) /(2^4 *3^4) ==2² =4в) (2^n*5^n)/10*10^n ==10^n /10*10^n =1/10 =0.1г) 24^n =(2²*6)^n=2^2n*6^n(2^2n *6^n)/(2²*2^2n*6^n)==1/2² =1/4 =0.25д) =(5²* 1 0^2n) /10^1n =5² =25e)(100^n *100) /((2^n/2)*25²*2 5^n ==(10^2n *4*25)*2 /(2^2n *5^2n*25²) ==(10^2n *4)*2 /(10^2n *25) =8/25 =0.32