Respostas

2014-07-17T10:08:11-03:00
X²-6x+5=0

Δ=b²-4ac

Δ=(-6)²-4·1·5=·36-20 = 16
√Δ=√16=4

x_{1}= \frac{6+4}{2}=5 \\ x_{2}= \frac{6-4}{2}=1

x={1,5}