(4a+2b-1)²-(4a-2b+1)²
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 09:12:52
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(4a+2b-1)²-(4a-2b+1)²
(4a+2b-1)²-(4a-2b+1)²
(4a+2b-1)²-(4a-2b+1)²
原式=[(4a+2b-1)+(4a-2b+1)] [(4a+2b-1)-(4a-2b+1)]
=(4a+2b-1+4a-2b+1)(4a+2b-1-4a+2b-1)
=8a(4b-2)
=16a(2b-1)