x^2+(200+0.5x)^2=4X^2(200+0.5x)^2-3x^2=0(200+0.5x+√3x)(200+0.5x-√3x)=0200+(0.5+√3)x=0 200+(0.5-√3）x=0x1=-200/(0.5+√3) =800 (0.5-√3）/11x2=-200/(0.5-√3) = 800 (0.5+√3）/11