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Simplifying (9a + -9)(9a2 + 7a + -1) = 0 Reorder the terms: (-9 + 9a)(9a2 + 7a + -1) = 0 Reorder the terms: (-9 + 9a)(-1 + 7a + 9a2) = 0 Multiply (-9 + 9a) * (-1 + 7a + 9a2) (-9(-1 + 7a + 9a2) + 9a * (-1 + 7a + 9a2)) = 0 ((-1 * -9 + 7a * -9 + 9a2 * -9) + 9a * (-1 + 7a + 9a2)) = 0 ((9 + -63a + -81a2) + 9a * (-1 + 7a + 9a2)) = 0 (9 + -63a + -81a2 + (-1 * 9a + 7a * 9a + 9a2 * 9a)) = 0 (9 + -63a + -81a2 + (-9a + 63a2 + 81a3)) = 0 Reorder the terms: (9 + -63a + -9a + -81a2 + 63a2 + 81a3) = 0 Combine like terms: -63a + -9a = -72a (9 + -72a + -81a2 + 63a2 + 81a3) = 0 Combine like terms: -81a2 + 63a2 = -18a2 (9 + -72a + -18a2 + 81a3) = 0 Solving 9 + -72a + -18a2 + 81a3 = 0 Solving for variable 'a'. Factor out the Greatest Common Factor (GCF), '9'. 9(1 + -8a + -2a2 + 9a3) = 0 Ignore the factor 9.Subproblem 1
Set the factor '(1 + -8a + -2a2 + 9a3)' equal to zero and attempt to solve: Simplifying 1 + -8a + -2a2 + 9a3 = 0 Solving 1 + -8a + -2a2 + 9a3 = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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