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歡迎您訪問數學考題練習:下列方程是一元二次方程的是!

數學考題練習:下列方程是一元二次方程的是

更新時間:2024-01-12 14:08:27作者:貝語網校

下列方程是一元二次方程的是

A.x2-2x+1=(x+1)(x-1)

B.ax2+bx+c=0

C.x2=0

D.+=1

試題答案

C

試題解析

根據一元二次方程的定義對各選項進行逐一分析即可.

解答:A、原方程可化為-2x+2=0,是一元一次方程,故本選項錯誤;

B、若a=0,則此方程是一元一次方程,故本選項錯誤;

C、符合一元二次方程的定義,故本選項正確;

D、是分式方程,故本選項錯誤.

故選C.

點評:本題考查的是一元二次方程的定義,即只含有一個未知數,并且未知數的最高次數是2的整式方程叫一元二次方程.

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