因式分解:(a²+2ab-4)(a²+2ab-2)+1
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/29 09:55:49
因式分解:(a²+2ab-4)(a²+2ab-2)+1
(a²+2ab-4)(a²+2ab-2)+1
=(a²+2ab)²-6(a²+2ab)+9
=(a²+2ab-3)²
设a²+2ab=X ,原式=(X-4)(X-2)+1=X²-6X+9=(X-3)²=(a²+2ab-3)²
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来源:学生作业帮助网 编辑:作业帮 时间:2024/05/29 09:55:49
因式分解:(a²+2ab-4)(a²+2ab-2)+1
(a²+2ab-4)(a²+2ab-2)+1
=(a²+2ab)²-6(a²+2ab)+9
=(a²+2ab-3)²
设a²+2ab=X ,原式=(X-4)(X-2)+1=X²-6X+9=(X-3)²=(a²+2ab-3)²