(x-y)(x2+xy+y2)-xy(y-x)
=(x-y)(x²+xy+y²+xy)
=(x-y)(x+y)²
猜你喜欢
- 1meat和grass有单复数形式吗?如题
- 2立秋,清明,立夏,立春,立冬,冬至.用英语怎么说?
- 3在你的家乡 译英
- 4甲数的三分之一等于乙数的四分之一,乙数是120,甲数是( )
- 5the book may be a bit thick but it's written in easy english
- 6请说说火车票上字母,数字的意思.
- 7矩阵的共轭转置乘以自身得到的结果的特征值是什么
- 8如果你有困难,必要时可以找警察帮忙. If you have problems,you can ___ the police for help __ __
- 91.修一条路,已经修了全长的5/8,已修的是剩下的几分之几,剩下是已修的几分之几,剩下的是全长的几分之几
- 10是what happen...还是what happens...?