( log₂ x) ^2 - 4log₂ x+3=0

log(2)x=t   ОДЗ x>0t^2-4t+3=0D=16-12=4t1=(4+2)/2=3; log(2)x=3; x=2^3=8t2=(4-2)/2=1; log(2)x=1; x=2Ответ x={2;8}