Question

equacao de 2 grau -x (elevado a 2) +x +12=0

Answer 1

1^2-4*-1*12
1+48
49

x1= -(1)+v49/2*-1
x1= -1+7/-2
x1=6/-2
x1=-3

x2=-(1)-v49/2*-1
x2=-1-7/-2
x2=-8/-2
x2=-4

S=[-3,-4]