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Simplifying 15a2 = 66a + 45 Reorder the terms: 15a2 = 45 + 66a Solving 15a2 = 45 + 66a Solving for variable 'a'. Reorder the terms: -45 + -66a + 15a2 = 45 + 66a + -45 + -66a Reorder the terms: -45 + -66a + 15a2 = 45 + -45 + 66a + -66a Combine like terms: 45 + -45 = 0 -45 + -66a + 15a2 = 0 + 66a + -66a -45 + -66a + 15a2 = 66a + -66a Combine like terms: 66a + -66a = 0 -45 + -66a + 15a2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-15 + -22a + 5a2) = 0 Factor a trinomial. 3((-3 + -5a)(5 + -1a)) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-3 + -5a)' equal to zero and attempt to solve: Simplifying -3 + -5a = 0 Solving -3 + -5a = 0 Move all terms containing a to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -5a = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -5a = 0 + 3 -5a = 0 + 3 Combine like terms: 0 + 3 = 3 -5a = 3 Divide each side by '-5'. a = -0.6 Simplifying a = -0.6Subproblem 2
Set the factor '(5 + -1a)' equal to zero and attempt to solve: Simplifying 5 + -1a = 0 Solving 5 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1a = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1a = 0 + -5 -1a = 0 + -5 Combine like terms: 0 + -5 = -5 -1a = -5 Divide each side by '-1'. a = 5 Simplifying a = 5Solution
a = {-0.6, 5}
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