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$x^2-2x=-y^2+2y+7$
Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation x^2+y^2-2x-2y+-7=0. Group the terms of the equation. Factor the polynomial x^2-2x by it's greatest common factor (GCF): x. Use the complete the square method to factor the trinomial of the form ax^2+bx+c. Take common factor a (-1) to all terms. Add and subtract \displaystyle\left(\frac{b}{2a}\right)^2.