8^(-1/3)-(1/2)^log2 6-2lg(1/4)+4lg5=
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8^(-1/3)-(1/2)^log26-2lg(1/4)+4lg5=8^(-1/3)-(1/2)^log26-2lg(1/4)+4lg5=8^(-1/3)-(1/2)^log26-2lg(1/4)+
8^(-1/3)-(1/2)^log2 6-2lg(1/4)+4lg5=
8^(-1/3)-(1/2)^log2 6-2lg(1/4)+4lg5=
8^(-1/3)-(1/2)^log2 6-2lg(1/4)+4lg5=
8^(-1/3)-(1/2)^log2 6-2lg(1/4)+4lg5
=（1/8）^(1/3) -2^log2(1/6) +2lg4 +4lg5
=1/2 -1/6 +4lg2+4lg5
=1/3 +4(lg2+lg5)
=1/3 +4
=13/3
原式=1/2-1/6-lg(1/16)+lg625
=1/3+lg10000
=1/3+4
=13/4
计算：（1）log2 (4^3*8^5);(2)log2 3+log2 6-log2 9
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2^log2(3)×log2(1/8)+lg4+2lg5
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