第1个回答 2014-12-28
帮人不为采纳，学习雷锋有容乃大
第2个回答 2014-12-28
第3个回答 2014-12-28
x(x-y)²-2(y-x)³
=x(x-y)²＋2(x-y)³
=(x-y)²[x+2(x-y)
=(x-y)²(x+2x-2y)
=(x-y)²(3x-2y)
=x(x-y)²＋2(x-y)³
=(x-y)²[x+2(x-y)
=(x-y)²(x+2x-2y)
=(x-y)²(3x-2y)
第4个回答 2014-12-28
x(x-y)^2-2(y-x)^3
=x(x-y)^2+2(x-y)^3
=(x-y)^2[x+2(x-y)]
=(x-y)^2(3x-2y)本回答被提问者采纳
=x(x-y)^2+2(x-y)^3
=(x-y)^2[x+2(x-y)]
=(x-y)^2(3x-2y)本回答被提问者采纳
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