2^6*2^1/x=2^2x
6/x=2x
6=2x^2
x^2=3
x1=sqrt3
x2=-sqrt3
2) 3^2x-5*3^x+6=0
3^x=t
3^2x=t^2
t^2-5t+6
D=25-24=1
t1=5+1/2=3
t2=5-1/2=2
3^x1=3
x1=1
3^x=2
x2=na risunke
3)
