Question

resolva as equacoes do segundo grau x2-6-16=0

Answer 1

x² - 6x - 16 = 0

a = 1; b = -6; c = -16

x = [- b ± √(b² - 4ac)] / 2a
x = [- (-6) ± √([-6]² - 4 · 1 · [-16])] / 2 · 1
x = [6 ± √(36 + 64)] / 2
x = [6 ± √100] / 2
x = [6 ± 10] / 2
x' = [6 + 10] / 2 = 16 / 2 = 8
x'' = [6 - 10] / 2 = -4 / 2 = -2

Espero ter ajudado. Valeu!