(3m-2n)²+24mn
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![(3m-2n)²+24mn](/uploads/image/z/5590347-51-7.jpg?t=%283m-2n%29%26%23178%3B%2B24mn)
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(3m-2n)²+24mn
(3m-2n)²+24mn
(3m-2n)²+24mn
(3m--2n)^2+24mn=9m^2--12mn+4n^2+24mn
=9m^2+12mn+4n^2
=(3m+2n)^2.
(3m-2n)²+24mn=(3m+2n)²
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 10:30:28
(3m-2n)²+24mn
(3m-2n)²+24mn
(3m-2n)²+24mn
(3m--2n)^2+24mn=9m^2--12mn+4n^2+24mn
=9m^2+12mn+4n^2
=(3m+2n)^2.
(3m-2n)²+24mn=(3m+2n)²