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Simplifying (a + 12)(a2 + -7a + 7) = 0 Reorder the terms: (12 + a)(a2 + -7a + 7) = 0 Reorder the terms: (12 + a)(7 + -7a + a2) = 0 Multiply (12 + a) * (7 + -7a + a2) (12(7 + -7a + a2) + a(7 + -7a + a2)) = 0 ((7 * 12 + -7a * 12 + a2 * 12) + a(7 + -7a + a2)) = 0 ((84 + -84a + 12a2) + a(7 + -7a + a2)) = 0 (84 + -84a + 12a2 + (7 * a + -7a * a + a2 * a)) = 0 (84 + -84a + 12a2 + (7a + -7a2 + a3)) = 0 Reorder the terms: (84 + -84a + 7a + 12a2 + -7a2 + a3) = 0 Combine like terms: -84a + 7a = -77a (84 + -77a + 12a2 + -7a2 + a3) = 0 Combine like terms: 12a2 + -7a2 = 5a2 (84 + -77a + 5a2 + a3) = 0 Solving 84 + -77a + 5a2 + a3 = 0 Solving for variable 'a'. The solution to this equation could not be determined.
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