a) x-1=0 3 x-3=0
x=1 ya da x=3
b) x²-2x - 4x +8
x²-6x +8 =8
x²-6x=0
x(x-6)=0
x=0 ya da x=6
c) (2x-1).(x-3)=0
2x-1=0 x-3=0
2x=1 ya da x=3
x=1/2
d) x(x-4)=12
x=6
