将下列多项式按字母a的降幂排列
(1)3a²4—6a—5—2a的四次方加a³ (2)ab²—2a²b+a³+4a³—1
人气:468 ℃ 时间:2019-09-05 23:41:33
解答
(1)-2a的四次方+a³+3a²-6a-5
(2)5a³-2a³+ab²-1
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