Question

Encontre as raizes de x^2+4x+3=0.

Answer 1

             x^2 + 4x + 3 = 0
 
          fatorando
                          (x + 1)(x + 3) = 0
                                 x + 1 = 0
                                                   x1 = - 1
                                 x + 3 = 0
                                                   x2 = - 3
                                                                         S = { - 1, - 3 }

Answer 2

$x^{2} +4x+3=0;$ Δ=$4^{2}-4.1.3 =16-12=4;$ $x= \frac{-4+/- \sqrt{4} }{ 2.1} = \frac{-4+/-2}{2} ; x^{'} = \frac{-4+2}{2} = \frac{-2}{2} =-1; x^{"} = \frac{-4-2}{2} = \frac{-6}{2} = -3$