(x-y)2(x2+xy+y2)2-(x3+y3)(-x3+y3),其中x=1,y=-1
人气：293 ℃ 时间：2020-01-23 23:37:38
解答
(x-y)²(x²+xy+y²)²-(x³+y³)(-x³+y³)=(x³-y³)² - [-(x³)²+(y³)²]=(x³)²+(y³)² -2x³y³ +(x³)²...
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