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Simplifying (5c + 7)(8c2 + c + 7) = 0 Reorder the terms: (7 + 5c)(8c2 + c + 7) = 0 Reorder the terms: (7 + 5c)(7 + c + 8c2) = 0 Multiply (7 + 5c) * (7 + c + 8c2) (7(7 + c + 8c2) + 5c * (7 + c + 8c2)) = 0 ((7 * 7 + c * 7 + 8c2 * 7) + 5c * (7 + c + 8c2)) = 0 ((49 + 7c + 56c2) + 5c * (7 + c + 8c2)) = 0 (49 + 7c + 56c2 + (7 * 5c + c * 5c + 8c2 * 5c)) = 0 (49 + 7c + 56c2 + (35c + 5c2 + 40c3)) = 0 Reorder the terms: (49 + 7c + 35c + 56c2 + 5c2 + 40c3) = 0 Combine like terms: 7c + 35c = 42c (49 + 42c + 56c2 + 5c2 + 40c3) = 0 Combine like terms: 56c2 + 5c2 = 61c2 (49 + 42c + 61c2 + 40c3) = 0 Solving 49 + 42c + 61c2 + 40c3 = 0 Solving for variable 'c'. The solution to this equation could not be determined.
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