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Simplifying a(2a + -8) = 330 Reorder the terms: a(-8 + 2a) = 330 (-8 * a + 2a * a) = 330 (-8a + 2a2) = 330 Solving -8a + 2a2 = 330 Solving for variable 'a'. Reorder the terms: -330 + -8a + 2a2 = 330 + -330 Combine like terms: 330 + -330 = 0 -330 + -8a + 2a2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-165 + -4a + a2) = 0 Factor a trinomial. 2((-11 + -1a)(15 + -1a)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-11 + -1a)' equal to zero and attempt to solve: Simplifying -11 + -1a = 0 Solving -11 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + -1a = 0 + 11 Combine like terms: -11 + 11 = 0 0 + -1a = 0 + 11 -1a = 0 + 11 Combine like terms: 0 + 11 = 11 -1a = 11 Divide each side by '-1'. a = -11 Simplifying a = -11Subproblem 2
Set the factor '(15 + -1a)' equal to zero and attempt to solve: Simplifying 15 + -1a = 0 Solving 15 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + -1a = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -1a = 0 + -15 -1a = 0 + -15 Combine like terms: 0 + -15 = -15 -1a = -15 Divide each side by '-1'. a = 15 Simplifying a = 15Solution
a = {-11, 15}
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