Question

2^x+2^(2-x)=5 ma puteti ajuta va rog?

Answer 1

2^x+2^2-2^x=5

2^x*(2^0+2^2-2^0)=5

2^x*(1+4-1)=5

2^x*4=5

2^x*2^2=5

2^2+x=4+1

2^2+x=2^2+2^0

2+x=2+0

2+x=2

x=0