Respostas

  • Usuário do Brainly
2013-10-09T23:04:51-03:00
Delta = b^2 - 4.a.c
delta = 2^2 - 4.1.(-1)
delta = 4 + 4
delta = 8
x = - 2 raiz8/ 2.1
x = - 2 raiz8 / 2
x = - raiz8