Question

x ao quadrado + 6x + 6 = 0​

Answer 1

Resposta:

Delta = b² - 4ac

Delta = 36 - 4(1)(-6)

Delta = 36 + 24

Delta = 60

X = (-b +- raiz delta) / 2a

X = (-6 +- raiz 60) / 2

X = (-6 +- 7.74) / 2

x' = (-6 + 7.74) / 2 = 1.74 / 2 = 0.87

x" = (-6 - 7.74) / 2 = -13.74 / 2 = -6.87