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Simplifying 2(a + -5) = 4a(2a + -10) Reorder the terms: 2(-5 + a) = 4a(2a + -10) (-5 * 2 + a * 2) = 4a(2a + -10) (-10 + 2a) = 4a(2a + -10) Reorder the terms: -10 + 2a = 4a(-10 + 2a) -10 + 2a = (-10 * 4a + 2a * 4a) -10 + 2a = (-40a + 8a2) Solving -10 + 2a = -40a + 8a2 Solving for variable 'a'. Combine like terms: 2a + 40a = 42a -10 + 42a + -8a2 = -40a + 8a2 + 40a + -8a2 Reorder the terms: -10 + 42a + -8a2 = -40a + 40a + 8a2 + -8a2 Combine like terms: -40a + 40a = 0 -10 + 42a + -8a2 = 0 + 8a2 + -8a2 -10 + 42a + -8a2 = 8a2 + -8a2 Combine like terms: 8a2 + -8a2 = 0 -10 + 42a + -8a2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-5 + 21a + -4a2) = 0 Factor a trinomial. 2((-5 + a)(1 + -4a)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-5 + a)' equal to zero and attempt to solve: Simplifying -5 + a = 0 Solving -5 + a = 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 + a = 0 + 5 Combine like terms: -5 + 5 = 0 0 + a = 0 + 5 a = 0 + 5 Combine like terms: 0 + 5 = 5 a = 5 Simplifying a = 5Subproblem 2
Set the factor '(1 + -4a)' equal to zero and attempt to solve: Simplifying 1 + -4a = 0 Solving 1 + -4a = 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 + -4a = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4a = 0 + -1 -4a = 0 + -1 Combine like terms: 0 + -1 = -1 -4a = -1 Divide each side by '-4'. a = 0.25 Simplifying a = 0.25Solution
a = {5, 0.25}
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