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Simplifying (x2 + 2xy + y2 + -9) = (y2 + -4x2) Reorder the terms: (-9 + 2xy + x2 + y2) = (y2 + -4x2) Remove parenthesis around (-9 + 2xy + x2 + y2) -9 + 2xy + x2 + y2 = (y2 + -4x2) Reorder the terms: -9 + 2xy + x2 + y2 = (-4x2 + y2) Remove parenthesis around (-4x2 + y2) -9 + 2xy + x2 + y2 = -4x2 + y2 Add '-1y2' to each side of the equation. -9 + 2xy + x2 + y2 + -1y2 = -4x2 + y2 + -1y2 Combine like terms: y2 + -1y2 = 0 -9 + 2xy + x2 + 0 = -4x2 + y2 + -1y2 -9 + 2xy + x2 = -4x2 + y2 + -1y2 Combine like terms: y2 + -1y2 = 0 -9 + 2xy + x2 = -4x2 + 0 -9 + 2xy + x2 = -4x2 Solving -9 + 2xy + x2 = -4x2 Solving for variable 'x'. Combine like terms: x2 + 4x2 = 5x2 -9 + 2xy + 5x2 = -4x2 + 4x2 Combine like terms: -4x2 + 4x2 = 0 -9 + 2xy + 5x2 = 0 The solution to this equation could not be determined.
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