X=-1-(根号2)
x+1=-根号2
(x+1)^2=2
x^2+2x-1=0
x^5+4x^4+6x^3+6X^2+2x+3
=(x^2+2x-1)(x^3+2x^2+3x+2)+(x+5)
=0+x+5
=-1-(根号2)+5
=4-根号2