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Simplifying (d2 + 5d + 4) * y = x2 + 7x + 9 Reorder the terms: (4 + 5d + d2) * y = x2 + 7x + 9 Reorder the terms for easier multiplication: y(4 + 5d + d2) = x2 + 7x + 9 (4 * y + 5d * y + d2 * y) = x2 + 7x + 9 Reorder the terms: (5dy + d2y + 4y) = x2 + 7x + 9 (5dy + d2y + 4y) = x2 + 7x + 9 Reorder the terms: 5dy + d2y + 4y = 9 + 7x + x2 Solving 5dy + d2y + 4y = 9 + 7x + x2 Solving for variable 'd'. Reorder the terms: -9 + 5dy + d2y + -7x + -1x2 + 4y = 9 + 7x + x2 + -9 + -7x + -1x2 Reorder the terms: -9 + 5dy + d2y + -7x + -1x2 + 4y = 9 + -9 + 7x + -7x + x2 + -1x2 Combine like terms: 9 + -9 = 0 -9 + 5dy + d2y + -7x + -1x2 + 4y = 0 + 7x + -7x + x2 + -1x2 -9 + 5dy + d2y + -7x + -1x2 + 4y = 7x + -7x + x2 + -1x2 Combine like terms: 7x + -7x = 0 -9 + 5dy + d2y + -7x + -1x2 + 4y = 0 + x2 + -1x2 -9 + 5dy + d2y + -7x + -1x2 + 4y = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -9 + 5dy + d2y + -7x + -1x2 + 4y = 0 The solution to this equation could not be determined.
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