| 3 - 2x | = 4x + 1
3 - 2x = 4x + 1
3 -1 = 2x +4x
2 = 6x
x = 2/6
| 3 - 2x | = 4x + 1
3 - 2x = 4x + 1
3 -1 = 2x +4x
2 = 6x
x = 2/6
Chuc ban hoc tot
- nếu | 3-2x| = 3-2x thì 3-2x \(\ge\)0=) -2x\(\ge\)-3 =) x\(\le\)3/2
- nếu | 3-2x| = -3+2x thì 3-2x< 0=) -2x< -3=) x>3/2
t/h1 x\(\le\)3/2
=) 3-2x =4x+1
=) -6x= -2
=) x= 1/3(t/m)
t/h 2 x> 3/2
=) -3 +2x= 4x+1
=) -2x= 4
=) x= -2(L)
S={ 1/3}