Lne-lg100=1-2= -1
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=log2 4*2log3 7/log 3 7=2*2=4
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1/3ˣ=z>0 z²+8z-9=0 z=-9 не годится z=1
x=0
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=2ˣ(8-6+1)=3*2ˣ>12 2ˣ>4=2² x>2
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log2 x=z x>0
z²-4z+3≤0 z1=1 z2=3
log2 x =1 x=2 log2 x=3 x=2³=8
x∈[2;8]
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