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Simplifying -1a2 = 9a Solving -1a2 = 9a Solving for variable 'a'. Reorder the terms: -9a + -1a2 = 9a + -9a Combine like terms: 9a + -9a = 0 -9a + -1a2 = 0 Factor out the Greatest Common Factor (GCF), '-1a'. -1a(9 + a) = 0 Ignore the factor -1.Subproblem 1
Set the factor 'a' equal to zero and attempt to solve: Simplifying a = 0 Solving a = 0 Move all terms containing a to the left, all other terms to the right. Simplifying a = 0Subproblem 2
Set the factor '(9 + a)' equal to zero and attempt to solve: Simplifying 9 + a = 0 Solving 9 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + a = 0 + -9 a = 0 + -9 Combine like terms: 0 + -9 = -9 a = -9 Simplifying a = -9Solution
a = {0, -9}
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