因式分解(x+y)(x+y+2xy)+(xy+1)(xy-1)已得出答案令x+y=a,xy=b,则原式=a(a+2b)+(b+1)(b-1)=a^2+2ab+b^2-1=(a+b)^2-1=(a+b+1)(a+b-1)故原式=(x+y+xy+1)(x+y+xy-1)=(x+1)(y+1)(x+y+xy
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 08:40:22
因式分解(x+y)(x+y+2xy)+(xy+1)(xy-1)已得出答案令x+y=a,xy=b,则原式=a(a+2b)+(b+1)(b-1)=a^2+2ab+b^2-1=(a+b)^2-1=(a+b+1)(a+b-1)故原式=(x+y+xy+1)(x+y+xy-1)=(x+1)(y+1)(x+y+xy
因式分解(x+y)(x+y+2xy)+(xy+1)(xy-1)
已得出答案令x+y=a,xy=b,则
原式=a(a+2b)+(b+1)(b-1)
=a^2+2ab+b^2-1
=(a+b)^2-1
=(a+b+1)(a+b-1)
故原式=(x+y+xy+1)(x+y+xy-1)
=(x+1)(y+1)(x+y+xy-1)
故原式=(x+y+xy+1)(x+y+xy-1)
=(x+1)(y+1)(x+y+xy-1)这个步骤
因式分解(x+y)(x+y+2xy)+(xy+1)(xy-1)已得出答案令x+y=a,xy=b,则原式=a(a+2b)+(b+1)(b-1)=a^2+2ab+b^2-1=(a+b)^2-1=(a+b+1)(a+b-1)故原式=(x+y+xy+1)(x+y+xy-1)=(x+1)(y+1)(x+y+xy
(x+y+xy+1)(x+y+xy-1)
=(x+1)(y+1)(x+y+xy-1)
是因为 x+y+xy+1=x(y+1)+(y+1)=(x+1)(y+1)
这是分组分解法
因式分解:x方y+2xy+y
因式分解:x×x-xy-2y×y-x-y
(x+y)/x /(x-(2xy-y^2)/x) 因式分解
-xy^2(x+y)^3+x(x+y)^2因式分解
因式分解:8(x-2y)-x(7x+y)+xy.
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
2x(x-y)+4xy(y-x) 因式分解2x(x-y)+4xy(y-x) 因式分解
2x^2-xy-y^2因式分解
因式分解x^2+xy-2y^2
X^2Y-2XY^2 因式分解
因式分解:-x^2+2xy-y^2
xy+2x+y+2因式分解
因式分解:x^2y+xy^2=?
x^2-xy-4+2y因式分解
xy-2x+y-2因式分解,
(x+2y)^2-8xy 因式分解
因式分解x^2-3xy+y^2
x^2-3xy+y^2因式分解