4a^2b+3ab^2-2b^2+a^3 按a的升幂排列为多少
人气：225 ℃ 时间：2019-11-18 08:42:36
解答
4a²b + 3ab² - 2b² + a³
按a的升幂排列得：
-2b² + 3ab² + 4a²b + a³
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