6x^2-7x+1=0(6x-1)(x-1)=0x=1/6或x=1
十字相乘，分解因式6x^2-7x+1=0(6x-1)(x-1)=0x1=1/6 x2=1
6x²-7x+1=0(x-1)(6x-1)=0x1=1x2=1/6
7X=13 所以 X=13/7
x=13/7
