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(m+3)(m+5)+m²-9因式分解
人气:131 ℃ 时间:2020-02-15 08:48:49
解答
2{m-1}{m-3}过程m²+8m+15+m²-9=2m²+8m+6=2【m²+4m+3】=2【m+1】【m+3】刚才失误
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