来自骆磊的问题
解方程x^2+(200+0.5x)^2=4X^2
解方程x^2+(200+0.5x)^2=4X^2
1回答
2020-05-29 16:43
解方程x^2+(200+0.5x)^2=4X^2
解方程x^2+(200+0.5x)^2=4X^2
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=0200+(0.5-√3)x=0x1=-200/(0.5+√3)=800(0.5-√3)/11x2=-200/(0.5-√3)=800(0.5+√3)/11