a)|x-1/6|-6/16=25%
|x-1/6|= 5/8
x-1/6=5/8 hoặc x-1/6=-5/8
x=19/24 x=-11/24
b) (3x-1) (-1/2x +5)=0
ta sét 2 trường hợp:
TH1: 3x-1=0
3x=1
x=1/3
TH2:-1/2x+5=0
-1/2x=-5
x=10
c)3.(3x-1/2)^3 +1/9=0
3(3x -1/2)^3 =-1/9
(3x-1/2)^3 = -1/27
(3x-1/2)^3=(1/3)^3
3x-1/2=1/3
3x=5/6
x=5/18
d)( x+3/5)^2+41/25=9%:4,5%
( x+3/5)^2+41/25=1/5
( x+3/5)^2=-36/25
( x+3/5)^2=-(6/5)^2
x+3/5= -6/5
x=-9/5