因式分解:25a²-4(b+c)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 03:15:17
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因式分解:25a²-4(b+c)²
因式分解:25a²-4(b+c)²
因式分解:25a²-4(b+c)²
25a²-4(b+c)²
=[5a+2(b+c)][5a-2(b+c)]
=(5a+2b+2c)(5a-2b-2c)
25a²-4(b+c)²
=(5a)^2-[2(b+c)]^2
=[5a-2(b+c)][5a+2(b+c)]
=(5a-2b-2c)(5a+2b+2c)
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