Respostas

2013-08-15T16:03:09-03:00
A.
3x² - 4x + 1 = 0
∆=16-12
∆=4
√∆=2
x',x''=4+0u-2/6
x'=4+2/6=1
x''=4-2/6=1/3
duas raizes reais
1 3 1