Question 176109
Find the distance between the points (2,3) and (4,-1).
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It's {{{sqrt(dy^2 + dx^2)}}} dy = difference in y, dx in difference in x
={{{sqrt((-1-3)^2 + (4-2)^2)}}}
={{{sqrt(-4^2 + 2^2)}}}
={{{sqrt(16+4)}}}
={{{sqrt(20)}}}
={{{2sqrt(5)}}}
=~ 4.472