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Simplifying 40a2 + 40a = 0 Reorder the terms: 40a + 40a2 = 0 Solving 40a + 40a2 = 0 Solving for variable 'a'. Factor out the Greatest Common Factor (GCF), '40a'. 40a(1 + a) = 0 Ignore the factor 40.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 '(1 + a)' equal to zero and attempt to solve: Simplifying 1 + a = 0 Solving 1 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a = 0 + -1 Combine like terms: 1 + -1 = 0 0 + a = 0 + -1 a = 0 + -1 Combine like terms: 0 + -1 = -1 a = -1 Simplifying a = -1Solution
a = {0, -1}
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