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1/6a^4b^8-[(-ab)^-3*(a^2b^4)^2]/[(-1/2ab)^-3]
人气:250 ℃ 时间:2020-05-24 00:21:42
解答
1/6a^4b^8-[(-ab)^-3*(a^2b^4)^2]/[(-1/2ab)^-3]
=1/6a^4b^8-[-a^(-3)b^(-3)*(a^4b^8]/[(-8a^(-3)b^(-3)]
=1/6a^4b^8-[-ab^5]/[(-8a^(-3)b^(-3)]
=1/6a^4b^8+1/8a^4b^8
=7/24a^4b^8
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