Respostas

  • Usuário do Brainly
2014-08-04T01:52:08-03:00
y= x^{2} -6x+8

 x^{2} -6x+8=0

Δ=36-32
Δ=4
√Δ=√4
√4= ± 2

x'= \frac{6+2}{2} = \frac{8}{2} =4

x"= \frac{6-2}{2} = \frac{4}{2} =2

S={2,4}
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