作业帮x²y-2xy² y三次方
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 02:18:43
A-B=x³+2y³-xy²-(-y³+x³+2xy²)=x³+2y³-xy²+y³-x³
原式=2xy(4x²-2x-1)再问：求过程再答：没有提取公因式
原式化简：(2x^3-3x^2y-2xy^2)-(x^3-2xy^2+y^3)+(-x^3+3x^2y-y^3)=2x^3-3x^2y-2xy^2-x^3+2xy^2-y^3-x^3+3x^2y-y^
x³y³—2x²y²+xy=xy(x²y²-2xy+1)=xy[(xy)²-2xy+1]=xy(xy-1)²
原式=(x^4+xy³)-(2y^4+2x³y)=x(x³+y³)-2y(x³+y³)=(x-2y)(x³+y³)=(x
xy的三次方-2x²y²+x的三次方y=xy(y²-2xy+x²)=xy(x-y)²
x的三次方y+2x的平方y的平方+xy的三次方＝xy(x^2+2xy+y^2)=xy(x+y)^2
-xy(x²y的五次方-xy的三次方-y)=-x³y的6次方+x²y的4次方+xy²=-（xy²）³+（xy²）²+xy
上式化简的最终结果是-2y的平方,也就是与x无关,所以无论x取几,答案都一样为2
x²y³-2x(4xy³)=x²y³-2x²y³=-x²y³
x²y-2xy²+x³=x(xy-2y²+x²)=x(x+2y)(x-y)
=xy(4x²+4xy+y²)=xy(2x+y)²
原式=x^3+2x^2y+xy^2 =x(x^2+2xy+y^2) =x(x+y)^2再问：x-2��֮x-
x³y-xy³=xy(x²-y²)=xy(x+y)(x-y)
y-2x=-20102x-y=20102x^4y³-x³y^4=x³y³(2x-y)=(xy)³(2x-y)=10³×2010=201000
-x三次方y-2x平方y平方-xy三次方=-xy(x²+2xy+y²)=-xy(x+y)²
x³y-2x²y+xy=xy(x²-2x+1)=xy(x-y)²
原式=-x³y^6+x²y^4+xy²=-(xy²)³+(xy²)²+(xy²)=-2³+2²+2=
这是两题还是一题?再问：两题再答：那就好第一题：-2x²y-x³-xy²原式=-x（2xy+x²+y²）=-x（x+y)²第二题：a
m=x^2-3xy^2+2xy^2+3y^3,n=x^3-2x^2+xy^2-5y^3,则2x-7x^2*y^3+5xy^+14y^3等于多少?3m=3x^2-9xy^2+6xy^2+9y^3n=x^