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数学
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数学题(m-1)(m²+m+1)
人气:251 ℃ 时间:2020-03-07 13:27:19
解答
(m - 1)(m ² + m + 1)
= m ²(m - 1)+ m(m - 1)+ (m - 1)
= m ³ - m ² + m ² - m + m - 1
= m ³ - 1
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