已知多项式(2mx2﹣x2+3x+1)﹣(5x2﹣4y2+3x)化简后不含x2项 发布时间:2017-05-22 07:25 │ 来源:www.tikuol.com 题型:解答题 问题: 已知多项式(2mx2﹣x2+3x+1)﹣(5x2﹣4y2+3x)化简后不含x2项.求多项式2m3﹣[3m3﹣(4m﹣5)+m]的值.
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