27^(-1/3)-(-1/2)^log2(下面的)4(上面的)-2lg1/4+4lg5
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27^(-1/3)-(-1/2)^log2(下面的)4(上面的)-2lg1/4+4lg527^(-1/3)-(-1/2)^log2(下面的)4(上面的)-2lg1/4+4lg527^(-1/3)-(-
27^(-1/3)-(-1/2)^log2(下面的)4(上面的)-2lg1/4+4lg5
27^(-1/3)-(-1/2)^log2(下面的)4(上面的)-2lg1/4+4lg5
27^(-1/3)-(-1/2)^log2(下面的)4(上面的)-2lg1/4+4lg5
27^(-1/3)-(-1/2)^log2(下面的)4(上面的)-2lg1/4+4lg5
=1/3-(-1/2)^2-2lg2^(-2)+4lg5
=1/3-1/4+4lg2+4lg5
=1/12+4(lg2+lg5)
=1/12+4
=49/12
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