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歡迎您訪問數學考題練習:下列方程組中,屬于二元一次方程組的是!

數學考題練習:下列方程組中,屬于二元一次方程組的是

更新時間:2024-01-12 16:25:09作者:貝語網校

下列方程組中,屬于二元一次方程組的是

A.

B.

C.

D.

試題答案

C

試題解析

本題根據二元一次方程組的基本形式及特點,即①含有兩個二元一次方程,②方程都為整式方程,③未知數的最高次數都為一次.

解答:A:含有三個未知數,不是;

B:mn項的指數為2,不是;

c:符合條件,是;

D:含有分式,不是.

故選C.

點評:本題主要考查二元一次方程組的判定,解題的關鍵是熟練掌握二元一次方程組的基本形式及特點.

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