Question

Va rog ajutați-mă!!!

Answer 1

a). 2x2x2x2=2^4

b). 2^2016 + 2^2017=2^2016(2^0+2^1)=x x 2^2016
2^2016 x 3=x 2^2016 => x= 3

c). 4^x + 4^x+1=80
4^x + 4^x x 4^1=80
4^x(1+4)=80
4^x x 5=80
4^x=16
x=2

d). 3^45:3^30+x=3^7 x 3^8
3^15+x=3^15
x=0