下列运算正确的是( )
A.2a2+a2=3a4 | B.(﹣2a2)3=8a6 |
C.a3÷a2=a | D.(a﹣b)2=a2﹣b2 |
更新时间:2019-05-28 02:37:25
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【推荐2】下列运算一定正确的是( )
A.a2•a=a3 | B.(a3)2=a5 |
C.(a﹣1)2=a2﹣1 | D.a5﹣a2=a3 |
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【推荐2】下列运算正确的是( )
①
;②
;③
;④
;⑤![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253cf01d15aaa76e0016b71ef4261323.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179b7a1c7fb63e025bea2c4cc9e6db10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3ef4799221c37a58b093a0b703500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f5f5b3b357e02da22ab28e289d3f88f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244cc193a4c0998fdf2d3df8beb79855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253cf01d15aaa76e0016b71ef4261323.png)
A.①⑤ | B.①④⑤ | C.②④⑤ | D.②③⑤ |
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