Question

x² - 6x - 16 = 0?????????????????????

Answer 1

Resposta:

x² - 6x - 16 = 0

a = 1

b = -6

c = -16

∆ = -6² - 4.1.-16

∆ = 36 + 64

∆ = 100

x = -(-6) ± √100/2.1

x = 6 ± 10/2

x' = 6 + 10/2 = 16/2 = 8

x" = 6 - 10/2 = -4/2 = -2