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Simplifying 2a(a + -4) = 4a + -1(2a + 4) Reorder the terms: 2a(-4 + a) = 4a + -1(2a + 4) (-4 * 2a + a * 2a) = 4a + -1(2a + 4) (-8a + 2a2) = 4a + -1(2a + 4) Reorder the terms: -8a + 2a2 = 4a + -1(4 + 2a) -8a + 2a2 = 4a + (4 * -1 + 2a * -1) -8a + 2a2 = 4a + (-4 + -2a) Reorder the terms: -8a + 2a2 = -4 + 4a + -2a Combine like terms: 4a + -2a = 2a -8a + 2a2 = -4 + 2a Solving -8a + 2a2 = -4 + 2a Solving for variable 'a'. Reorder the terms: 4 + -8a + -2a + 2a2 = -4 + 2a + 4 + -2a Combine like terms: -8a + -2a = -10a 4 + -10a + 2a2 = -4 + 2a + 4 + -2a Reorder the terms: 4 + -10a + 2a2 = -4 + 4 + 2a + -2a Combine like terms: -4 + 4 = 0 4 + -10a + 2a2 = 0 + 2a + -2a 4 + -10a + 2a2 = 2a + -2a Combine like terms: 2a + -2a = 0 4 + -10a + 2a2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(2 + -5a + a2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(2 + -5a + a2)' equal to zero and attempt to solve: Simplifying 2 + -5a + a2 = 0 Solving 2 + -5a + a2 = 0 Begin completing the square. Move the constant term to the right: Add '-2' to each side of the equation. 2 + -5a + -2 + a2 = 0 + -2 Reorder the terms: 2 + -2 + -5a + a2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5a + a2 = 0 + -2 -5a + a2 = 0 + -2 Combine like terms: 0 + -2 = -2 -5a + a2 = -2 The a term is -5a. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5a + 6.25 + a2 = -2 + 6.25 Reorder the terms: 6.25 + -5a + a2 = -2 + 6.25 Combine like terms: -2 + 6.25 = 4.25 6.25 + -5a + a2 = 4.25 Factor a perfect square on the left side: (a + -2.5)(a + -2.5) = 4.25 Calculate the square root of the right side: 2.061552813 Break this problem into two subproblems by setting (a + -2.5) equal to 2.061552813 and -2.061552813.Subproblem 1
a + -2.5 = 2.061552813 Simplifying a + -2.5 = 2.061552813 Reorder the terms: -2.5 + a = 2.061552813 Solving -2.5 + a = 2.061552813 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + a = 2.061552813 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + a = 2.061552813 + 2.5 a = 2.061552813 + 2.5 Combine like terms: 2.061552813 + 2.5 = 4.561552813 a = 4.561552813 Simplifying a = 4.561552813Subproblem 2
a + -2.5 = -2.061552813 Simplifying a + -2.5 = -2.061552813 Reorder the terms: -2.5 + a = -2.061552813 Solving -2.5 + a = -2.061552813 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + a = -2.061552813 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + a = -2.061552813 + 2.5 a = -2.061552813 + 2.5 Combine like terms: -2.061552813 + 2.5 = 0.438447187 a = 0.438447187 Simplifying a = 0.438447187Solution
The solution to the problem is based on the solutions from the subproblems. a = {4.561552813, 0.438447187}Solution
a = {4.561552813, 0.438447187}
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