Question

Usando a Fórmula de Bhaskara -x^2-2x+3=0

Answer 1

Δ = -2² - 4.3.-1
Δ = 4 + 12
Δ = 16

x = 2 +-√16/-2
x = 2 +-4/-2
x' = 2+4/-2
x' = 6/-2 = -3
x'' = 2-4/-2
x'' = -2/-2 = 1             ok