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Simplifying (a + 4)(a2 + -7a + 7) = 0 Reorder the terms: (4 + a)(a2 + -7a + 7) = 0 Reorder the terms: (4 + a)(7 + -7a + a2) = 0 Multiply (4 + a) * (7 + -7a + a2) (4(7 + -7a + a2) + a(7 + -7a + a2)) = 0 ((7 * 4 + -7a * 4 + a2 * 4) + a(7 + -7a + a2)) = 0 ((28 + -28a + 4a2) + a(7 + -7a + a2)) = 0 (28 + -28a + 4a2 + (7 * a + -7a * a + a2 * a)) = 0 (28 + -28a + 4a2 + (7a + -7a2 + a3)) = 0 Reorder the terms: (28 + -28a + 7a + 4a2 + -7a2 + a3) = 0 Combine like terms: -28a + 7a = -21a (28 + -21a + 4a2 + -7a2 + a3) = 0 Combine like terms: 4a2 + -7a2 = -3a2 (28 + -21a + -3a2 + a3) = 0 Solving 28 + -21a + -3a2 + a3 = 0 Solving for variable 'a'. The solution to this equation could not be determined.
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