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Simplifying (4a + 5)(4a + 5)(4a + 5) = 0 Reorder the terms: (5 + 4a)(4a + 5)(4a + 5) = 0 Reorder the terms: (5 + 4a)(5 + 4a)(4a + 5) = 0 Reorder the terms: (5 + 4a)(5 + 4a)(5 + 4a) = 0 Multiply (5 + 4a) * (5 + 4a) (5(5 + 4a) + 4a * (5 + 4a))(5 + 4a) = 0 ((5 * 5 + 4a * 5) + 4a * (5 + 4a))(5 + 4a) = 0 ((25 + 20a) + 4a * (5 + 4a))(5 + 4a) = 0 (25 + 20a + (5 * 4a + 4a * 4a))(5 + 4a) = 0 (25 + 20a + (20a + 16a2))(5 + 4a) = 0 Combine like terms: 20a + 20a = 40a (25 + 40a + 16a2)(5 + 4a) = 0 Multiply (25 + 40a + 16a2) * (5 + 4a) (25(5 + 4a) + 40a * (5 + 4a) + 16a2 * (5 + 4a)) = 0 ((5 * 25 + 4a * 25) + 40a * (5 + 4a) + 16a2 * (5 + 4a)) = 0 ((125 + 100a) + 40a * (5 + 4a) + 16a2 * (5 + 4a)) = 0 (125 + 100a + (5 * 40a + 4a * 40a) + 16a2 * (5 + 4a)) = 0 (125 + 100a + (200a + 160a2) + 16a2 * (5 + 4a)) = 0 (125 + 100a + 200a + 160a2 + (5 * 16a2 + 4a * 16a2)) = 0 (125 + 100a + 200a + 160a2 + (80a2 + 64a3)) = 0 Combine like terms: 100a + 200a = 300a (125 + 300a + 160a2 + 80a2 + 64a3) = 0 Combine like terms: 160a2 + 80a2 = 240a2 (125 + 300a + 240a2 + 64a3) = 0 Solving 125 + 300a + 240a2 + 64a3 = 0 Solving for variable 'a'. The solution to this equation could not be determined.
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