整理2x^2+2√3*x-22=0x^2+√3*x-11=0,判别式=3+4*11=47得x=(-√3±√47)/2
x^2+(√3+x)^2 =25x^2+x^2+2√3x + 3 =252x^2 +2√3x =22x^2 +√3x =11(x+√3/2)^2 = 11 + 3/4x+√3/2 = √47/2 or -√47/2x = (-√3+√47)/2 or (-√3-√47)/2
