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Simplifying 30a2 + -21a = 36 Reorder the terms: -21a + 30a2 = 36 Solving -21a + 30a2 = 36 Solving for variable 'a'. Reorder the terms: -36 + -21a + 30a2 = 36 + -36 Combine like terms: 36 + -36 = 0 -36 + -21a + 30a2 = 0 Factor out the Greatest Common Factor (GCF), '3'. 3(-12 + -7a + 10a2) = 0 Factor a trinomial. 3((-4 + -5a)(3 + -2a)) = 0 Ignore the factor 3.Subproblem 1
Set the factor '(-4 + -5a)' equal to zero and attempt to solve: Simplifying -4 + -5a = 0 Solving -4 + -5a = 0 Move all terms containing a to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -5a = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -5a = 0 + 4 -5a = 0 + 4 Combine like terms: 0 + 4 = 4 -5a = 4 Divide each side by '-5'. a = -0.8 Simplifying a = -0.8Subproblem 2
Set the factor '(3 + -2a)' equal to zero and attempt to solve: Simplifying 3 + -2a = 0 Solving 3 + -2a = 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 + -2a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2a = 0 + -3 -2a = 0 + -3 Combine like terms: 0 + -3 = -3 -2a = -3 Divide each side by '-2'. a = 1.5 Simplifying a = 1.5Solution
a = {-0.8, 1.5}
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