Respostas

2013-05-22T13:27:44-03:00

(2x-1).(x+2)= 3x-7x2

2x+4x-x-2= 3x-7x2

2x+3x-2= 3x-7x2

2x+3x-2-3x+7x=2

2x-2+7-2=0

2x-4+7=0

2x+3=0