(1-y)²-2x²(1+y²)+x的四次方(1-y)² 因式分解 求解啊……在线等……
问题描述：
(1-y)²-2x²(1+y²)+x的四次方(1-y)² 因式分解 求解啊……在线等……
答
原式=(1+y)^2+2(1+y)x^2(1+y)+x^4(1-y)^2-2(1+y)x^2(1-y)-2x^2(1+y^2) =[(1+y)+x^2(1-y)]^2-2(1+y)x^2(1-y)-2x^2(1+y^2) =[(1+y)+x^2(1-y)]^2-(2x)^2 =[(1+y)+x^2(1-y)+2x]•[(1+y)+x^2(1-y)-2x] =(x^2-x^2y+2x...