题目内容
计算
的结果是
- A.-1
- B.1
- C.
- D.
C
分析:根据同底数幂的乘方和积的乘方得到原式=(
+
)2010•(
-
)2010•(
-
)=[(
+
)•(
-
)]2010•(
-
),然后利用平方差公式计算即可.
解答:原式=(
+
)2010•(
-
)2010•(
-
)
=[(
+
)•(
-
)]2010•(
-
)
=(3-2)2010•(
-
)
=
-
.
故选C.
点评:本题考查了二次根式的混合运算:先把各二次根式化为最简二次根式,在进行二次根式的乘除运算,然后合并同类二次根式.
分析:根据同底数幂的乘方和积的乘方得到原式=(
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
解答:原式=(
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
=[(
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
=(3-2)2010•(
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
=
![](http://thumb.1010pic.com/pic5/latex/21.png)
![](http://thumb.1010pic.com/pic5/latex/53.png)
故选C.
点评:本题考查了二次根式的混合运算:先把各二次根式化为最简二次根式,在进行二次根式的乘除运算,然后合并同类二次根式.
![](http://thumb2018.1010pic.com/images/loading.gif)
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