
(x-y)的平方×(x-y)的三次方-(x-y)的四次方×(y-x)
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(x-y)的平方×(x-y)的三次方-(x-y)的四次方×(y-x)
解:
原式=(x-y)^2(x-y)^3-(x-y)^4(y-x)
=(x-y)^(3+2)+(x-y)^(4+1)
=(x-y)^5+(x-y)^5
=2(x-y)^5
解:
原式=(x-y)^2(x-y)^3-(x-y)^4(y-x)
=(x-y)^(3+2)+(x-y)^(4+1)
=(x-y)^5+(x-y)^5
=2(x-y)^5
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