Question

Equacão do 2° grau a) x2-x-2-3=0

Answer 1

a) x² - x - 2 - 3 = 0

x² - x - 5 = 0

delta = b² - 4ac
delta = (-1)² - 4(1)(- 5)
delta = 1 + 20
delta = 21

x = (- b +- razidedelta)/2a

x = 1+(raizde21) / 2

ou

x = 1-(raizde21) / 2