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Simplifying (x + -2y)(x + 2y) = 90005 Multiply (x + -2y) * (x + 2y) (x(x + 2y) + -2y * (x + 2y)) = 90005 ((x * x + 2y * x) + -2y * (x + 2y)) = 90005 Reorder the terms: ((2xy + x2) + -2y * (x + 2y)) = 90005 ((2xy + x2) + -2y * (x + 2y)) = 90005 (2xy + x2 + (x * -2y + 2y * -2y)) = 90005 (2xy + x2 + (-2xy + -4y2)) = 90005 Reorder the terms: (2xy + -2xy + x2 + -4y2) = 90005 Combine like terms: 2xy + -2xy = 0 (0 + x2 + -4y2) = 90005 (x2 + -4y2) = 90005 Solving x2 + -4y2 = 90005 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4y2' to each side of the equation. x2 + -4y2 + 4y2 = 90005 + 4y2 Combine like terms: -4y2 + 4y2 = 0 x2 + 0 = 90005 + 4y2 x2 = 90005 + 4y2 Simplifying x2 = 90005 + 4y2 Reorder the terms: -90005 + x2 + -4y2 = 90005 + 4y2 + -90005 + -4y2 Reorder the terms: -90005 + x2 + -4y2 = 90005 + -90005 + 4y2 + -4y2 Combine like terms: 90005 + -90005 = 0 -90005 + x2 + -4y2 = 0 + 4y2 + -4y2 -90005 + x2 + -4y2 = 4y2 + -4y2 Combine like terms: 4y2 + -4y2 = 0 -90005 + x2 + -4y2 = 0 The solution to this equation could not be determined.
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