有没有matlab?两行就能把根解出来: >> syms x y >> solve('x^3+x-y') ans = [ 1/6*(108*y+12*(12+81*y^2)^(1/2))^(1/3)-2/(108*y+12*(12+81*y^2)^(1/2))^(1/3)] [ -1/12*(108*y+12*(12+81*y^2)^(1/2))^(1/3)+1/(108*y+12*(12+81*y^2)^(1/2))^(1/3)+1/2*i*3^(1/2)*(1/6*(108*y+12*(12+81*y^2)^(1/2))^(1/3)+2/(108*y+12*(12+81*y^2)^(1/2))^(1/3))] [ -1/12*(108*y+12*(12+81*y^2)^(1/2))^(1/3)+1/(108*y+12*(12+81*y^2)^(1/2))^(1/3)-1/2*i*3^(1/2)*(1/6*(108*y+12*(12+81*y^2)^(1/2))^(1/3)+2/(108*y+12*(12+81*y^2)^(1/2))^(1/3))]