﹙a²+b²-1﹚²-4a²b²
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/09 10:25:38
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﹙a²+b²-1﹚²-4a²b²
﹙a²+b²-1﹚²-4a²b²
﹙a²+b²-1﹚²-4a²b²
﹙a²+b²-1﹚²-4a²b²
=﹙a²+b²-1+2ab﹚(a²+b²-1-2ab)
=[(a+b)²-1][(a-b)²-1]
=(a+b+1)(a+b-1)(a-b+1)(a-b-1)
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