题目内容
在实数范围内分解因式:x3-5x= .
【答案】分析:首先提取公因式,再进一步运用平方差公式.
解答:解:原式=x(x2-5)=x(x+
)(x-
).
故答案为x(x+
)(x-
).
点评:此题考查了实数范围内的因式分解.注意:5=(
)2.
解答:解:原式=x(x2-5)=x(x+
![](http://thumb.1010pic.com/pic6/res/czsx/web/STSource/20131022164926978710538/SYS201310221649269787105010_DA/0.png)
![](http://thumb.1010pic.com/pic6/res/czsx/web/STSource/20131022164926978710538/SYS201310221649269787105010_DA/1.png)
故答案为x(x+
![](http://thumb.1010pic.com/pic6/res/czsx/web/STSource/20131022164926978710538/SYS201310221649269787105010_DA/2.png)
![](http://thumb.1010pic.com/pic6/res/czsx/web/STSource/20131022164926978710538/SYS201310221649269787105010_DA/3.png)
点评:此题考查了实数范围内的因式分解.注意:5=(
![](http://thumb.1010pic.com/pic6/res/czsx/web/STSource/20131022164926978710538/SYS201310221649269787105010_DA/4.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
在实数范围内分解因式:x3-5x= .