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3.解下列绝对值方程:|2x+1|-|4-x|
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所以2x+1=4-x或者2x+1+4-x=0(互为相反数的两个数和为0)
咨询记录 · 回答于2022-07-16
3.解下列绝对值方程:|2x+1|-|4-x|
|2x+1|-|4-x|=啥
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嘶
应该是|2x+1|=|4-x|
|2x+1|-|4-x|=4,这样吗
输错了
两个数的绝对值相等,这两个数要么相等,要么互为相反数。
所以2x+1=4-x或者2x+1+4-x=0(互为相反数的两个数和为0)
所以可以解得x=1或者x=-5
您看,我这样说,您能理解吗
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噢!
可以可以
懂了
嗯嗯