# SOLUTION: how to do you solve : xsquared-4x-2y=0

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 Question 596035: how to do you solve : xsquared-4x-2y=0Found 2 solutions by unlockmath, solver91311:Answer by unlockmath(1599)   (Show Source): You can put this solution on YOUR website!Hello, This x^2-4x-2y=0is solved by: Adding 2y to both sides: x^2-4x=2y Now divide by 2: (x^2)/2-2x=y factor this: 1/2(x)(x-4) x=0 x=4 RJ www.math-unlock.com Answer by solver91311(16868)   (Show Source): You can put this solution on YOUR website! You don't. That is a whole set of quadratic equations. The set has infinite elements; one for each possible real value of . Without another relationship defined, you cannot determine which element of the set you are dealing with. You can apply the quadratic formula to get an expression for the solution: Where , , and You will probably want to specify an interval for such that the roots of the equation will have real values. John My calculator said it, I believe it, that settles it