来自李利辉的问题
【〔注:由于输入法问题,平方或立方等方均为:N^n〕(1)x^2(x-1)-y^2(y-1)(2)x^2-8xy+15y^2+2x-4y-3(3)x^4+x^2y^2+y^4(4)x^4+y^4+2^4-2x^2y^2-2x^22^2-2y^22^2(5)x^3+6x^2y+11xy^2+6y^3】
〔注:由于输入法问题,平方或立方等方均为:N^n〕(1)x^2(x-1)-y^2(y-1)
(2)x^2-8xy+15y^2+2x-4y-3
(3)x^4+x^2y^2+y^4
(4)x^4+y^4+2^4-2x^2y^2-2x^22^2-2y^22^2
(5)x^3+6x^2y+11xy^2+6y^3
1回答
2020-07-1522:27