x1=2*0+3*0+4=4;
y1=3*0+4*0-2=-2;
x2=2*100+3*10+4=234;
y2=3*100+4*10-2=338;
s^2=(y2-y1)^2+(x2-x1)^2=52900+115600=168500;
x1=2*0+3*0+4=4;
y1=3*0+4*0-2=-2;
x2=2*100+3*10+4=234;
y2=3*100+4*10-2=338;
s^2=(y2-y1)^2+(x2-x1)^2=52900+115600=168500;