LOG2(x)²-LOG2(x⁷)=-12
ОДЗ х∈(0; +∞)
LOG2(x)²-7LOG2(x)+12=0
t=LOG2(x)
t²-7t+12=0
t=3; t=4
LOG2(x)=3; LOG2(x)=4
x=2³; x=2⁴
x=8; x=16
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LOG2(x)²-LOG2(x⁷)=-12
ОДЗ х∈(0; +∞)
LOG2(x)²-7LOG2(x)+12=0
t=LOG2(x)
t²-7t+12=0
t=3; t=4
LOG2(x)=3; LOG2(x)=4
x=2³; x=2⁴
x=8; x=16