(x-y)^3乘(x-y)^2乘(y-x)
(x-y)^3*(x-y)^2*(y-x)这道题怎么算(x-y)^3*(x-y)^2*(y-x)看不懂?(x-y)^3乘(x-y)^2乘(y-x)总可以了吧...
(x-y)^3*(x-y)^2*(y-x)这道题怎么算
(x-y)^3*(x-y)^2*(y-x)看不懂?(x-y)^3乘(x-y)^2乘(y-x)总可以了吧 展开
(x-y)^3*(x-y)^2*(y-x)看不懂?(x-y)^3乘(x-y)^2乘(y-x)总可以了吧 展开
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(x-y)^3(x-y)^2(y-x)
=(x-y)^(3+2)[-(x-y)]
=-(x-y)(3+2+1)
=-(x-y)^6
=(x-y)^(3+2)[-(x-y)]
=-(x-y)(3+2+1)
=-(x-y)^6
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