Respostas

  • Usuário do Brainly
2014-06-25T15:33:10-03:00
4x² - 25
4x² - 25 = 0
4x² = 25
x² = 25/4
x = ± √(25/4)
x = ± √(5²/2²)
x = ± 5/2

S = {- 5/2, 5/2}
1 5 1