Respostas

2014-05-26T16:20:36-03:00
(2x+1)=(3x-1).(6x-1)
(2x+1)=18 x^{2} -3x-6x+1
(2x+1)=18 x^{2} -9x+1
18 x^{2} -9x+1-2x-1=0
18 x^{2} -11x=0
x(18x-11)=0
x=0
18x-11=0
18x=11
x=11/18