Question

10 x ao quadrado + 3x - 1 = 0​

Answer 1

Resposta:

Δ = 9 + 40

Δ = 49

x = 3 +-√49/20

x = 3 +-7/20

x' = 3+7/20

x' = 10/20 = 1/2

x'' = 3-7/20

x'' = -4/20 = -1/5 ok