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Simplifying (4a + 7)(7a2 + 8a + 4) = 0 Reorder the terms: (7 + 4a)(7a2 + 8a + 4) = 0 Reorder the terms: (7 + 4a)(4 + 8a + 7a2) = 0 Multiply (7 + 4a) * (4 + 8a + 7a2) (7(4 + 8a + 7a2) + 4a * (4 + 8a + 7a2)) = 0 ((4 * 7 + 8a * 7 + 7a2 * 7) + 4a * (4 + 8a + 7a2)) = 0 ((28 + 56a + 49a2) + 4a * (4 + 8a + 7a2)) = 0 (28 + 56a + 49a2 + (4 * 4a + 8a * 4a + 7a2 * 4a)) = 0 (28 + 56a + 49a2 + (16a + 32a2 + 28a3)) = 0 Reorder the terms: (28 + 56a + 16a + 49a2 + 32a2 + 28a3) = 0 Combine like terms: 56a + 16a = 72a (28 + 72a + 49a2 + 32a2 + 28a3) = 0 Combine like terms: 49a2 + 32a2 = 81a2 (28 + 72a + 81a2 + 28a3) = 0 Solving 28 + 72a + 81a2 + 28a3 = 0 Solving for variable 'a'. The solution to this equation could not be determined.
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