Respostas

2014-06-05T22:22:51-03:00
x(x + 3) + 4x + 2 = 5x + 2
x
² + 3x + 4x - 5x +2 - 2 = 0
x² + 2x = 0
x(x + 2) = 0
x = 0
x + 2 = 0 => x = -2
V {-2; 0} - LETRA B
2 5 2