作业帮2m/5n^2p-3n/4mp^2
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2m/5n^2p-3n/4mp^2
2m/5n^2p-3n/4mp^2
=8m/20n^2p-15n/20mp^2
=8m^2p/20mn^2p^2-15n^3/20mn^2p^2
=(8m^2p-15n^3)/20mn^2p^2
再问： 没的化简了吧，我算的也是这样
再答： 没的化简，相信自己
再问： 嗯 顺便帮我算下另外一道，看下对不 (2x/x^2-64y^2)-(1/x-8y)
再答： 2x/(x^2-64y^2)-1/(x-8y) = 2x/(x-8y)(x+8y)-(x+8y)/(x-8y)(x+8y) = [2x-(x+8y)]/(x-8y)(x+8y) =(2x-x-8y)/(x-8y)(x+8y) =(x-8y)/(x-8y)(x+82F(x!/(x+8y)
再问： 最后一步啥意思
再答： =(2x-x-8y)/(x-8y)(x+8y) =(x-8y)/(x-8y)(x+8y) =1/(x+8y)
=8m/20n^2p-15n/20mp^2
=8m^2p/20mn^2p^2-15n^3/20mn^2p^2
=(8m^2p-15n^3)/20mn^2p^2
再问： 没的化简了吧，我算的也是这样
再答： 没的化简，相信自己
再问： 嗯 顺便帮我算下另外一道，看下对不 (2x/x^2-64y^2)-(1/x-8y)
再答： 2x/(x^2-64y^2)-1/(x-8y) = 2x/(x-8y)(x+8y)-(x+8y)/(x-8y)(x+8y) = [2x-(x+8y)]/(x-8y)(x+8y) =(2x-x-8y)/(x-8y)(x+8y) =(x-8y)/(x-8y)(x+82F(x!/(x+8y)
再问： 最后一步啥意思
再答： =(2x-x-8y)/(x-8y)(x+8y) =(x-8y)/(x-8y)(x+8y) =1/(x+8y)
2m/5n^2p-3n/4mp^2
计算2m/5n²p-3n/4mp²
分式加减计算题2m 3n------- - ------5n²p 4mp²
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