Respostas

2014-04-08T16:02:39-03:00
2014-04-08T16:05:25-03:00
-b +- √b² -4ac / 2a
-(-10) +- 
√100-4.25.1 / 2a
10 +- √100-100 / 2a
10 +- 0 / 2.1
10 / 2
5
x' e x'' = 5