(x-y)^2-(y-x)的因式分解的结果是

求过程

( x - y )" - ( y - x )

= ( x - y )" + ( x - y )
= ( x - y )[ ( x - y ) + 1 ]
= ( x - y )( x - y + 1 )
或者
= ( y - x )" - ( y - x )
= ( y - x )[ ( y - x ) - 1 ]
= ( y - x )( y - x - 1 )追问

感谢 但是这题是选择题 你的第2种答案( y - x )( y - x - 1 )符合d选项再次感谢

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第1个回答  2013-07-16
(x-y)²-(y-x)
= (x-y)²+(x-y)
=(x-y)(x-y+1)
第2个回答  2013-07-16
(x-y)^2+(x-y)+1-1
=(x-y+1)^2-1
=(x-y+1)(x-y-1)

(x-y)^2-(y-x)的因式分解的结果是
( x - y )" - ( y - x )= ( x - y )" + ( x - y )= ( x - y )[ ( x - y ) + 1 ]= ( x - y )( x - y + 1 )或者 = ( y - x )" - ( y - x )= ( y - x )[ ( y - x ) - 1 ]= ( y - x )( y - x - 1 )...

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