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Simplifying (9xy + -2x2)(2x + -1y) = a Multiply (9xy + -2x2) * (2x + -1y) (9xy * (2x + -1y) + -2x2 * (2x + -1y)) = a ((2x * 9xy + -1y * 9xy) + -2x2 * (2x + -1y)) = a Reorder the terms: ((-9xy2 + 18x2y) + -2x2 * (2x + -1y)) = a ((-9xy2 + 18x2y) + -2x2 * (2x + -1y)) = a (-9xy2 + 18x2y + (2x * -2x2 + -1y * -2x2)) = a Reorder the terms: (-9xy2 + 18x2y + (2x2y + -4x3)) = a (-9xy2 + 18x2y + (2x2y + -4x3)) = a Combine like terms: 18x2y + 2x2y = 20x2y (-9xy2 + 20x2y + -4x3) = a Solving -9xy2 + 20x2y + -4x3 = a Solving for variable 'x'. Reorder the terms: -1a + -9xy2 + 20x2y + -4x3 = a + -1a Combine like terms: a + -1a = 0 -1a + -9xy2 + 20x2y + -4x3 = 0 The solution to this equation could not be determined.
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