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Grouping all terms to the left side of the equation
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$x^2+y^2-2xy=0$
Learn how to solve equations problems step by step online. Solve the equation x^2+y^2=2xy. Grouping all terms to the left side of the equation. The trinomial x^2+y^2-2xy is a perfect square trinomial, because it's discriminant is equal to zero. Using the perfect square trinomial formula. Factoring the perfect square trinomial.