方程求解!
4个回答
展开全部
| x- |(3x-5)/2|-1 | =6
x- |(3x-5)/2|-1 = 6 or -6
x-7 =|(3x-5)/2| (1) or
x+5 = |(3x-5)/2| (2)
from (1)
x-7 =|(3x-5)/2|
x-7 =(3x-5)/2 or -(x-7) =(3x-5)/2
2x-14 =3x-5 or -2x+14 =3x-5
x=-9 or x= 19/5
from (2)
x+5 = |(3x-5)/2|
x+5 = (3x-5)/2 or -(x+5) = (3x-5)/2
2x+10 = 3x-5 or -2x-10 = 3x-5
x=15 or x=-1
| x- |(3x-5)/2|-1 | =6
x=-9 or -1 or 19/5 or 15
x- |(3x-5)/2|-1 = 6 or -6
x-7 =|(3x-5)/2| (1) or
x+5 = |(3x-5)/2| (2)
from (1)
x-7 =|(3x-5)/2|
x-7 =(3x-5)/2 or -(x-7) =(3x-5)/2
2x-14 =3x-5 or -2x+14 =3x-5
x=-9 or x= 19/5
from (2)
x+5 = |(3x-5)/2|
x+5 = (3x-5)/2 or -(x+5) = (3x-5)/2
2x+10 = 3x-5 or -2x-10 = 3x-5
x=15 or x=-1
| x- |(3x-5)/2|-1 | =6
x=-9 or -1 or 19/5 or 15
展开全部
绝对值是6,则等于-6或者6,接下来该知道怎么解决了吧
追答
去掉绝对值后,两边平方即可,不是难题目,好好思考可以解决
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