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歡迎您訪問數學考題練習:已知關于x的一元二次方程有一根是0,則m=__!

數學考題練習:已知關于x的一元二次方程有一根是0,則m=__

更新時間:2024-01-12 16:27:22作者:貝語網校

已知關于x的一元二次方程有一根是0,則m=________.

試題答案

-

試題解析

首先由方程解的定義,將x=0代入方程,即可求得m的值,然后又由二次項系數不為0,即可求得答案.

解答:∵關于x的一元二次方程有一根是0,

∴將x=0代入原方程得:m2-3=0,

∴m=±,

又∵m-≠0,

∴m=-.

故答案為:-.

點評:此題考查了一元二次方程的定義與一元二次方程解的定義.題目難度不大,解題時要注意細心.

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