6x^2 -7x+1=0
(6x-1)(x-1)=0
6x-1=0或x-1=0
x=1/6或x=1
4x^2-3x=52
4x^2-3x-52=0
(4x+13)(x-4)=0
4x+13=0或x-4=0
x=-13/4或x=4