(1+y)^2-2x^2(1+y^2)+x^4(1-y)^2 (可用添拆项法) 分解因式
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(1+y)^2-2x^2(1+y^2)+x^4(1-y)^2(可用添拆项法)分解因式(1+y)^2-2x^2(1+y^2)+x^4(1-y)^2(可用添拆项法)分解因式(1+y)^2-2x^2(1+y
(1+y)^2-2x^2(1+y^2)+x^4(1-y)^2 (可用添拆项法) 分解因式
(1+y)^2-2x^2(1+y^2)+x^4(1-y)^2 (可用添拆项法) 分解因式
(1+y)^2-2x^2(1+y^2)+x^4(1-y)^2 (可用添拆项法) 分解因式
原式=[(1+y)-x^2(1-y)]^2-4*x^2*y^2
=(1+y-x^2+x^2*y)^2-(2xy)^2
=(1+y+2xy-x^2+x^2*y)(1+y-2xy-x^2+x^2*y)
=[(1-x^2)+(yx+y)+(x^2*y+xy)][(1-x^2)-(xy-y)+(x^2*y-xy)]
=(x+1)(x-1)(x-xy+1+y)(x-xy-1-y)
[(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y
1、y-x/x²-y²2、(x-y)(y-z)(z-x)/(z-y)(y-x)(x-z)
(x-y)(2x-y-1)
[(-2x-y)^2-(2x+y)(2x-y)]÷2y-1/2y
2y(x+二分之一y)-[(x+y)(x-y)+2y(y+x)],其中|x-1|=2
(x-y)(x+y)-(x+y)^2+2y(y-x),其中x=1,y=3.
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