下列命题不正确的是{"A":"0\u662f\u6574\u5f0f","B":"x=0\u662f\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b","C":"\uff08x+1\uff09\_刷题宝

题干

下列命题不正确的是（）

A：0是整式

B：x=0是一元一次方程

C：（x+1）（x﹣1）=x²+x是一元二次方程

D： $\sqrt{4}$ 是二次根式

上一题下一题 0.0难度选择题更新时间:2017-09-01 10:01:41

答案(点此获取答案解析）

C

同类题1

O C

∠ A O B

C M ⊥ O B

O C = 5

O M = 4

C

O A

的距离为____．

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--- You seemed to be deeply struck by his skill.
--- Not exactly. It was his courage ________ his skill that really struck me most.

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“澶渊之盟”前北宋对辽采取的主要政策是( )

同类题4

There is no perfect person, some people have made _____success of themselves in spite of what would appear to be ______ weakness in their professions.

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右图为近地面某气压场中的受力平衡的风向图，图中字母a代表的是（）

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