`5xxx^2+x y+y^2=100` – InterviewSolution

1.	`5xxx^2+x y+y^2=100`
Answer» Subtract From Both Sides `(5x^2 + xy + y^2) - y^2 = 100 - y^2` Simplify Left Side `5x^2 + xy = 100 - y^2` Subtract From Both Sides `(5x^2 + xy) - xy = (100 - y^2) - xy` Simplify Left Side `5x^2 = (100 - y^2) - xy` Divide From Both Sides `(5x^2) / 5 = ((100 - y^2) - xy) / 5` Simplify Fraction `x^2 = ((100 - y^2) - xy) / 5` Simplify Right Side `x^2 = 20 - y^2 / 5 - xy / 5`

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