Respostas

2014-04-21T15:01:37-03:00
14 + X + 2=0 16+x=0 RESPOSTA
 x= -16
equcao 2 grau
7x² + x +2=0
b²+-raiz b²-4.a.c/2.a 1²+-raiz 1²-4.7.2/2.7 = 1+- raiz 56/14 x' = 1+2raiz14/14 x"=1-2raiz14/14