因式分解:1、3a²-3ab+2ab-2b²-a+b 2、x²-12xy+36y²-6x+36y+8
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因式分解:1、3a²-3ab+2ab-2b²-a+b 2、x²-12xy+36y²-6x+36y+8
因式分解:1、3a²-3ab+2ab-2b²-a+b 2、x²-12xy+36y²-6x+36y+8
因式分解:1、3a²-3ab+2ab-2b²-a+b 2、x²-12xy+36y²-6x+36y+8
1、3a²-3ab+2ab-2b²-a+b
=3a²-ab-2b²-a+b
=﹙a-b﹚﹙3a+2b﹚-﹙a-b﹚
=﹙a-b﹚﹙3a+2b-1﹚
2、x²-12xy+36y²-6x+36y+8
=﹙x-6y﹚²-6﹙x-6y﹚+8
=﹙﹙x-6y-2﹚﹙x-6y-4﹚
可以用二次交叉方法进行分解。