Question

x ao quadrado menos 5x menos 6 igual a zero

Answer 1

X² - 5X - 6X = 0 A = 1

∆ = b² - 4 A C B = - 5

∆ = 25 + 24 C = - 6

∆ = 49

X = - b +- √∆ / 2 . a

X¹ = 6

X² = - 1