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(5m^2+3n^2)-(3m^2+5n^2)因式分解
..救急..谢咯!
人气:476 ℃ 时间:2019-09-20 09:44:28
解答
(5m^2+3n^2)-(3m^2+5n^2)
=2m^2-2n^2
=2(m+n)(m-n)
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