x1^3+x1^2-3x1=0,x1^3=3x1-x1^2x1+x2=-1 (1)x1*x2=-3 (2)(1)^2 x1^2+x2^2+2x1x2=1(2)代入 x1^2+x2^2=74x2^2=27-4x1^2x1^3-4x2^2+2028=x1^3-27+4x1^2+2028=x1^3+4x1^2+2001=3x1-x1^2+4x1^2+2001=3x1^2+3x1+2001=3(x1^...