Respostas

  • Usuário do Brainly
2013-10-27T13:32:39-02:00
(x + 1)² = 2(x+1)
(x + 1) (x + 1) = 2x + 2
x² + x + x + 1 = 2x + 2
x² + 2x + 1 = 2x + 2
x² + 2x + 1 - 2x - 2 = 0
x² + 1 - 2 = 0
x² - 1 = 0
x² = 1
x = +1 ou -1
2 4 2