下列运算正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2022-05-08 09:07:06
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【推荐2】下列计算中,错误的是( )
A.5a3-a3=4a3 | B.(-a)2·a3=a5 |
C.(a-b)3(b-a)2=(a-b)5 | D.2m·3n=6mn |
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【推荐2】计算多项式-2x(3x-2)2+3除以3x-2后,所得商式与余式两者之和为何?( )
A.-2x+3 | B.-6x2+4x | C.-6x2+4x+3 D .-6x2-4x+3 |
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【推荐1】如果(ambn)3=a9b12 ,那么m ,n 的值分别为( )
A.9,4 | B.3,4 | C.4,3 | D.9,6 |
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【推荐1】设a
,
是不相等的实数,定义★的一种运算;
★
,下面给出了关于这种运算的四个结论:①
★
;②
★
★
;③若
★
,则
或
;④
★
★
★
,其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec78ade44f2fc7ba14559351e9dbdbdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1488b4dc98c132977eba8ab7fe9dcdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1c0aff63659a406c8dd334e23f7ca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf478067a4c706e5a15a57779196ae9b.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd9cdea1e995c59e5d3225acad8b4d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b94b18bedd835efee50d7de0da3e1ba.png)
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A.①③ | B.③④ | C.①③④ | D.①②④ |
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