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歡迎您訪問數學考題練習:一個多項式與m2+m-2的和是m2-2m.這個!

數學考題練習:一個多項式與m2+m-2的和是m2-2m.這個

更新時間:2024-01-12 14:00:46作者:貝語網校

一個多項式與m2+m-2的和是m2-2m.這個多項式是________.

試題答案

-3m+2

試題解析

根據一多項式與m2+m-2的和是m2-2m,利用兩多項式的和減去已知多項式求出未知個多項式即可.

解答:∵一多項式與m2+m-2的和是m2-2m.

∴這個多項式是:m2-2m-(m2+m-2)=-3m+2.

故答案為:-3m+2.

點評:此題主要考查了整式的加減運算,根據已知得出兩多項式的和減去已知多項式求出未知個多項式是解決問題的關鍵.

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