Respostas

  • Usuário do Brainly
2014-08-15T18:21:10-03:00
 x^{2} -4x+3=0

a=1
b=-4
c=3
Δ=b²-4ac
Δ=16-12
Δ=4
√Δ=√4= ± 2

x=(-b ± √Δ)/2a

x'= \frac{4+2}{2} = \frac{6}{2} =3

x"= \frac{4-2}{2} = \frac{2}{2} =1

S={1,3}
2014-08-15T18:51:45-03:00