Respostas

2014-08-04T17:10:05-03:00
X(x-2)=3(x-2)
x^2-2x=3x-6
x^2-5x+6=0
delta=25-24
delta=1
x'=5+1/2
x'=3
x"=5-1/2
x"=2
espero ter ajudado