Respostas

2014-05-27T13:55:20-03:00
X(x-2)=5x
x²-2x=5x
x²-7x=0
delta: 49-4.1.0
delta:49

resolvendo bhaskara:
x1=7+7/2=7
x2=7-7/2=0
1 5 1