Question

resolva as equaçoes 2x2 + 4x = 0

Answer 1

2x2 + 4x = 0

2x( x + 2 ) = 0

2x1 = 0
  x1 = 0

x2 + 2 = 0
    x2 = - 2
  
  V = { 0, - 2}