|2-x|-|x+5|化简
问题描述:
|2-x|-|x+5|化简
答
当-5≤X<2时
|2-x|-|x+5|
=|x-2|-|x+5|
=-(x-2)-(x+5)
=-2x-3
答
当X<-5时
|2-x|-|x+5|
=|x-2|-|x+5|
=-(x-2)-[-(x+5)}
=7
当-5≤X<2时
|2-x|-|x+5|
=|x-2|-|x+5|
=-(x-2)-(x+5)
=-2x-3
当X≥2时
|2-x|-|x+5|
=|x-2|-|x+5|
=(x-2)-(x+5)
=-7
供参考!JSWYC