(5x-2y)²-2(5x-2y)+1
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 13:05:32
![(5x-2y)²-2(5x-2y)+1](/uploads/image/z/12537713-65-3.jpg?t=%EF%BC%885x-2y%29%26%23178%3B-2%EF%BC%885x-2y%29%2B1)
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(5x-2y)²-2(5x-2y)+1
(5x-2y)²-2(5x-2y)+1
(5x-2y)²-2(5x-2y)+1
(5x-2y)²-2(5x-2y)+1
=[(5x-2y)-1]²
=(5x-2y-1)²
提示:将5x-2y看做整体,直接运用完全平方公式