Question

X(x+4) +x(x+2)=2 ao quadrado+12

Answer 1

$x(x + 4) + x(x + 2) = {2}^{2} + 12 \\ {x}^{2} + 4x + {x}^{2} + 2x = 16 \\ 2 {x}^{2} + 6x - 16 = 0 \\ relacao \: de \: girard \\ s = - \frac{b}{a} \\ s = - \frac{6}{2} \\ s = - 3 \\ p = \frac{c}{a} \\ p = \frac{ - 16}{2} \\ p = - 8 \\ as \: raizes \: da \: equacao \: sao =$