Question

X ao quadrado + 5x + 6 = 0? equação

Answer 1

x² + 5x + 6 = 0

delta = b² - 4.a.c

a = 1
b = 5
c = 6


delta = 5² - 4.1.6
delta = 25 - 24
delta = 1

x = -b ± √delta/2.a


x = -5 ± √1/2.1

x = -5 ± 1/2

x = -5 + 1/2 = -4/2 = -2

x = -5 - 1/2 = -6/2 = -3


s={ -2, -3 }