因式分解,xy-y (a-b)x-(a-b)x² x²-1因式分解,xy-y (a-b)x-(a-b)x² x²-1 2a²-2b² 9x²-4分之1y²

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因式分解,xy-y(a-b)x-(a-b)x²x²-1因式分解,xy-y(a-b)x-(a-b)x²x²-12a²-2b²9x²-

因式分解,xy-y (a-b)x-(a-b)x² x²-1因式分解,xy-y (a-b)x-(a-b)x² x²-1 2a²-2b² 9x²-4分之1y²
因式分解,xy-y (a-b)x-(a-b)x² x²-1
因式分解,xy-y (a-b)x-(a-b)x² x²-1 2a²-2b² 9x²-4分之1y²

因式分解,xy-y (a-b)x-(a-b)x² x²-1因式分解,xy-y (a-b)x-(a-b)x² x²-1 2a²-2b² 9x²-4分之1y²
1,y(x一1)
2,(a一b)x(1一x)
3,(x十1)(x一1)
4,2(a+b)(a一b)
5,(3x十2)(3x一2)/(1+y)(1一y)

有点难

=y(x-1)
=(a-b)x(1-x)
=(x+1)(x-1)
=2(a+b)(a-b)
=(3x+y/2)(3x-y/2)
~满意还望采纳~