Question

Vă rog frumos exercilile 16 și 17 dau 30 de puncte !!!

Answer 1

16.
a) 42/54; b) 24/72; c) 55/22

17.
a)(2^5)^5/2^(n+3) = (2^3n:2^2)/(2^4)^3
2^25/2^(n+3) = 2^(3n-2)/2^12
25-n-3=3n-2-12
22-n=3n-14 =>4n=36 => n=9
b) 3^(n+1)/(3^3)^4 = 3^2n:3/(3^4)^5
3^(n+1)/3^12 = 3^(2n-1)/3^20
n+1-12=2n-1-20
n-11=2n-21 => n=10
c)(2^6)^3/2^(n+4) = (2^2)^11/2^4n:2
2^18/2^(n+4) = 2^22/2^(4n-1)
18-n-4=22-4n+1
14-n=23-4n => n=3