Question

equaçao segundo grau

Answer 1

Ola Mary

exemplo

x² + 2x - 3 = 0

a = 1
b = 2
c = -3

delta
d² = b² - 4*a*c
d² = 2² -4*1*(-3)
d² = 4 + 12 = 16
d = 4

x1 = (-b + d)/2a
x1 = (-2 + 4)/2 = 2/2 = 1

x2 = (-b - d)/2a
x2 = (-2 - 4)/2 = -6/2 = -3

.