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Simplifying (2x + y)(x + -2y) = 7 Multiply (2x + y) * (x + -2y) (2x * (x + -2y) + y(x + -2y)) = 7 ((x * 2x + -2y * 2x) + y(x + -2y)) = 7 Reorder the terms: ((-4xy + 2x2) + y(x + -2y)) = 7 ((-4xy + 2x2) + y(x + -2y)) = 7 (-4xy + 2x2 + (x * y + -2y * y)) = 7 (-4xy + 2x2 + (xy + -2y2)) = 7 Reorder the terms: (-4xy + xy + 2x2 + -2y2) = 7 Combine like terms: -4xy + xy = -3xy (-3xy + 2x2 + -2y2) = 7 Solving -3xy + 2x2 + -2y2 = 7 Solving for variable 'x'. Reorder the terms: -7 + -3xy + 2x2 + -2y2 = 7 + -7 Combine like terms: 7 + -7 = 0 -7 + -3xy + 2x2 + -2y2 = 0 The solution to this equation could not be determined.
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