(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)分解因式(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)最后要化成(x-1)(xy-x-1-y)(x+1)(xy-x+1+y)说出道理2l好象复杂了些............................其实应该很简单...........1l什么乱器八糟的....
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![(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)分解因式(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)最后要化成(x-1)(xy-x-1-y)(x+1)(xy-x+1+y)说出道理2l好象复杂了些............................其实应该很简单...........1l什么乱器八糟的....](/uploads/image/z/5932046-38-6.jpg?t=%281%2By-x%5E2%2Bx%5E2y-2xy%29%281%2By-x%5E2%2Bx%5E2y%2B2xy%29%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%281%2By-x%5E2%2Bx%5E2y-2xy%29%281%2By-x%5E2%2Bx%5E2y%2B2xy%29%E6%9C%80%E5%90%8E%E8%A6%81%E5%8C%96%E6%88%90%EF%BC%88x-1%29%28xy-x-1-y%29%28x%2B1%29%28xy-x%2B1%2By%29%E8%AF%B4%E5%87%BA%E9%81%93%E7%90%862l%E5%A5%BD%E8%B1%A1%E5%A4%8D%E6%9D%82%E4%BA%86%E4%BA%9B............................%E5%85%B6%E5%AE%9E%E5%BA%94%E8%AF%A5%E5%BE%88%E7%AE%80%E5%8D%95...........1l%E4%BB%80%E4%B9%88%E4%B9%B1%E5%99%A8%E5%85%AB%E7%B3%9F%E7%9A%84....)
(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)分解因式(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)最后要化成(x-1)(xy-x-1-y)(x+1)(xy-x+1+y)说出道理2l好象复杂了些............................其实应该很简单...........1l什么乱器八糟的....
(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)分解因式
(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)
最后要化成
(x-1)(xy-x-1-y)(x+1)(xy-x+1+y)
说出道理
2l
好象复杂了些..............
..............
其实应该很简单...........
1l
什么乱器八糟的..........不就是想挣分嘛........
好好答..........
(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)分解因式(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)最后要化成(x-1)(xy-x-1-y)(x+1)(xy-x+1+y)说出道理2l好象复杂了些............................其实应该很简单...........1l什么乱器八糟的....
(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)分解因式
=[(1-x^2)+(x^2y-2xy+y)][(1-x^2)+(x^2y+2xy+y)]
=[(1-x^2)+y(x^2-2x+1)][(1-x^2)+y(x^2+2x+1)]
=[(1+x)(1-x)+y(x-1)^2][(1+x)(1-x)+y(x+1)^2]
=(x-1)[-(x+1)+y(x-1)](x+1)[1-x+y(x+1)]
=(x-1)(xy-x-y-1)(x+1)(xy-x+y+1)
1
楼上的好厉害
我算了半天也没弄明白哎
哗~
真强~
自愧不如
厉害
=(x-1)(xy-x-y-1)(x+1)(xy-x+y+1)
(1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)分解因式
=[(1-x^2)+(x^2y-2xy+y)][(1-x^2)+(x^2y+2xy+y)]
=[(1-x^2)+y(x^2-2x+1)][(1-x^2)+y(x^2+2x+1)]
=[(1+x)(1-x)+y(x-1)^2][(1+x)(1-x)+y(x+1)^2]
=(x-1)[-(x+1)+y(x-1)](x+1)[1-x+y(x+1)]
=(x-1)(xy-x-y-1)(x+1)(xy-x+y+1)不错不错我也是这样想DI
1+y-x^2+x^2y-2xy)(1+y-x^2+x^2y+2xy)分解因式
=[(1-x^2)+(x^2y-2xy+y)][(1-x^2)+(x^2y+2xy+y)]
=[(1-x^2)+y(x^2-2x+1)][(1-x^2)+y(x^2+2x+1)]
=[(1+x)(1-x)+y(x-1)^2][(1+x)(1-x)+y(x+1)^2]
=(x-1)[-(x+1)+y(x-1)](x+1)[1-x+y(x+1)]
=(x-1)(xy-x-y-1)(x+1)(xy-x+y+1)