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There is a point $M (2,1$) on a Cartesian coordinate system. There is also a point $P (x,y)$. What is the distance $MP$ in $x$ and $y$?

I can figure out that $ PM^2$ = $(x-2)^2 + (y-1)^2$, at least, I think so, but how to solve $PM$? I am not the biggest fan of algebra so..

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    If you are considering the Euclidean distance then the distance between $M$ and $P$ is exactly the one written above by Isaac.2012-09-13

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