作业帮化简|x+3|-|2x-4|
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/15 18:47:19
化简|x+3|-|2x-4|
化简|x+3|-|2x-4|
化简|x+3|-|2x-4|
解
令x+3=0,2x-4=0
∴x=-3,x=2
当x
-x+7(x>2时）
3x-1(-3
（1）当x大于等于2时，原式=x+3-2x+4=7-x
（2)当x大于等于-3小于2时，原式=x+3-4+2x=3x-1
（3）当x小于-3时，原式=-3-x-4+2x=x-7
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