Question 624466
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Hi,
Note: D = {{{sqrt ((x[1]-x[2])^2+(y[1]-y[2])^2))}}}
what is the distance between 
(-4,-12) and 
(11,-6)     D = {{{sqrt( (-15)^2 +( -6)^2) = sqrt(261)=sqrt(9*29) 3sqrt(29)}}}