Respostas

2014-06-24T16:55:17-03:00
(x-2)(3x-1)
primeira raiz: 2
segunda raiz: 1/3
2014-06-24T17:04:42-03:00
3x²-7x+2=0

Δ=b²-4ac
Δ=(-7)²-4(3)(2)
Δ=49-24
Δ=25

x=(-b+-√Δ)/2a
x={-(-7)+-√25}/2•3
x=(7+-5)/6

x'=(7-5)/6
x'=2/6

x"=(7+5)/6
x"=12/6
x"=2

S={2/6;2}