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標題:
因式分解
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作者:
asd26900200
時間:
2010-8-27 07:57:49 PM
標題:
因式分解
5a. xy - 4x - 3y + 12
= (xy - 4x) - ( )
= x( ) - 3( )
=____________________
點做?
作者:
hh0
時間:
2010-8-27 11:21:39 PM
xy - 4x - 3y + 12
= (xy - 4x) - 3( y-4 )
= x( y-4 ) - 3( y-4 )
= (y-4) (x-3)
唔知係唔係甘樣
作者:
asd26900200
時間:
2010-8-27 11:51:24 PM
算
好過冇答案
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