先化简再求助:(-x^3+3x^2·y-y^3)-(x^3-2xy^2+y^3)+(2x^3-3x^2·y-2xy^2)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/11 12:01:12
先化简再求助:(-x^3+3x^2·y-y^3)-(x^3-2xy^2+y^3)+(2x^3-3x^2·y-2xy^2),其中x=2010,y=-1/2,但晓得哪个把x=2010抄错成x=2001,但他求得的结果也是正确的,怎么回事
![先化简再求助:(-x^3+3x^2·y-y^3)-(x^3-2xy^2+y^3)+(2x^3-3x^2·y-2xy^2)](/uploads/image/z/17987954-50-4.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%E5%86%8D%E6%B1%82%E5%8A%A9%EF%BC%9A%28-x%5E3%2B3x%5E2%C2%B7y-y%5E3%29-%28x%5E3-2xy%5E2%2By%5E3%29%2B%282x%5E3-3x%5E2%C2%B7y-2xy%5E2%29)
自己化简一下啊
原式化简之后=-2y^3与x无关,无论x取什么都没有关系
原式化简之后=-2y^3与x无关,无论x取什么都没有关系
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)
[x(x^2y^2-xy)-y(x^2-x^3y)]/3x^2y
(x+y)(x-y)-(2xy+3y)平方
1、(-7x^y)(2x^y-3xy^3+xy) 2、((x-y)^6)/((y-x)^3)/(x-y)
化简:x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y)
(3xy)平方/(-xy)+(x-2y)平方-(x+2y)(x-2y)=
x^2-xy-6y^2+3xy+y+2
计算3xy[2xy-x(y-2)+x-1]
计算:3xy[2xy-x(y-2)+x]
(-3x^y+2xy)-( )=4x^+xy
x^3y+2x^2y^3+xy^3
因式分解x^3+x^2y-xy^2-y^3