(3m-1)(m+1)+(2m-1)(m-1)-(3m+5)(m-2) 好人 拜托你再帮我算一下好不好
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(3m-1)(m+1)+(2m-1)(m-1)-(3m+5)(m-2) 好人 拜托你再帮我算一下好不好
![(3m-1)(m+1)+(2m-1)(m-1)-(3m+5)(m-2) 好人 拜托你再帮我算一下好不好](/uploads/image/z/8271565-61-5.jpg?t=%EF%BC%883m-1%EF%BC%89%28m%2B1%29%2B%282m-1%29%28m-1%29-%283m%2B5%29%28m-2%29+%E5%A5%BD%E4%BA%BA+%E6%8B%9C%E6%89%98%E4%BD%A0%E5%86%8D%E5%B8%AE%E6%88%91%E7%AE%97%E4%B8%80%E4%B8%8B%E5%A5%BD%E4%B8%8D%E5%A5%BD)
(3m-1)(m+1)+(2m-1)(m-1)-(3m+5)(m-2)
=3m^2+2m-1+2m^2-3m+1-3m^2+m+10
=2m^2+10
=3m^2+2m-1+2m^2-3m+1-3m^2+m+10
=2m^2+10
(3m-1)(m+1)+(2m-1)(m-1)-(3m+5)(m-2) 好人 拜托你再帮我算一下好不好
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