It is obtained by the equation x2+bx+b+ radical number 2=0.

4-2b+b+ radical number 2=0

So b=4+ root number 2

So there is x2+(4+ radical number 2)x+4+ radical number 2=0.

X 1=-2, and the root number 2 of x2=-2 is obtained.

And |x 1|+2|x2|=2+4+2 Radical number 2=6+2 times Radical number 2.

|c|+2=4+2 times the root number 2+2=6+2 times the root number 2

That is, the equation when b=4+ root number 2. . . . It is a quadratic equation of T system.