log₂(x-2)≤3-log₂x
log₂(x-2)≤log₂8-log₂x
log₂(x-2)≤log₂(8/x)
x-2≤8/x
((x-4)(x+2))/x≤0
(-∞;-2]∨(0;4]
ОДЗ
х>0, х>2
ответ:(2;4]
log₂(x-2)≤3-log₂x
log₂(x-2)≤log₂8-log₂x
log₂(x-2)≤log₂(8/x)
x-2≤8/x
((x-4)(x+2))/x≤0
(-∞;-2]∨(0;4]
ОДЗ
х>0, х>2
ответ:(2;4]