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| Math Central | Quandaries & Queries |
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Question from Margret, a student: when does sqrt(x^2+y^2)=x+y |
Hi Margret,
with
\[\sqrt{x^2 + y^2} = x + y\]
I would first square both sides and then expand the right side and simplify. This should give you a good indication of the values of $x$ and $y$ if the equation is true.
Does this help?
Penny
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