化简： a2a−1+11−a 的结果是( )_刷题宝

题干

化简：

a

2

a

−

1

+

1

1

−

a

的结果是( )

A： $a$

B： $a + 1$

C： $a - 1$

D： $a^{2} - 1$

上一题下一题 0.0难度选择题更新时间:2019-12-23 05:09:46

答案(点此获取答案解析）

B

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