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歡迎您訪問數學考題練習：在二次根式中，a的取值范圍是！

數學考題練習：在二次根式中，a的取值范圍是

更新時間：2024-01-12 16:34:04作者：貝語網校

在二次根式中，a的取值范圍是

A.a＞-2

B.a≥-2

C.a≠-2

D.a≤-2

試題答案

B

試題解析

根據二次根式有意義的條件：被開方數大于等于0，列不等式求解．

解答：根據題意，得

a+2≥0，解得a≥-2．

故選B．

點評：此題考查了二次根式有意義的條件．

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