Question

过点P（2,4）及Q（3,-1）两点,且在X轴上截得的线段长为6的圆的方程是

Answer 1

（5/2,3/2)k=5/-1=-5k=1/5y-3/2=1/5(x-5/2)/y/^2+3^2=(x-2)^2+(y-4)^2y^2+9=(x-2)^2+y^2-8y+16(x-2)^2-8y+7=0y=3/2+1/5(x-5/2)(x-2)^2-12-8/5(x-5/2)+7=05(x-2)^2-60-8(x-5/2)+35=05x^2-20x+20-60-8x+20+35=05x^2-28...