Question 417403
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b>
Hi
D = {{{sqrt ((x1-x2)^2+(y1-y2)^2))}}}
 (2, 1)
(-5,-1) D = {{{sqrt( 49 + 4 )= sqrt(53)}}}
 
(-2, 1)
( 5,-1) D = {{{sqrt( 49 + 4)= sqrt(53)}}}
{{{drawing(300,300,   -6, 6, -6, 6, grid(1),
circle(5, -1,0.3),
circle(-5, -1,0.3),
line(5,-1,-5,-1),
circle(-2, 1,0.3),
line(-5,-1,-2,1),
circle(2, 1,0.3),
line(-2,1,2,1),
line(5,-1,2,1),
line(2,1,-5,-1),
line(-2,1,5,-1),
graph( 300, 300, -6, 6, -6, 6))}}}