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Simplifying 2(a + -4) = 4a + -1a(2a + 4) Reorder the terms: 2(-4 + a) = 4a + -1a(2a + 4) (-4 * 2 + a * 2) = 4a + -1a(2a + 4) (-8 + 2a) = 4a + -1a(2a + 4) Reorder the terms: -8 + 2a = 4a + -1a(4 + 2a) -8 + 2a = 4a + (4 * -1a + 2a * -1a) -8 + 2a = 4a + (-4a + -2a2) Combine like terms: 4a + -4a = 0 -8 + 2a = 0 + -2a2 -8 + 2a = -2a2 Solving -8 + 2a = -2a2 Solving for variable 'a'. Combine like terms: -2a2 + 2a2 = 0 -8 + 2a + 2a2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-4 + a + a2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-4 + a + a2)' equal to zero and attempt to solve: Simplifying -4 + a + a2 = 0 Solving -4 + a + a2 = 0 Begin completing the square. Move the constant term to the right: Add '4' to each side of the equation. -4 + a + 4 + a2 = 0 + 4 Reorder the terms: -4 + 4 + a + a2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + a + a2 = 0 + 4 a + a2 = 0 + 4 Combine like terms: 0 + 4 = 4 a + a2 = 4 The a term is a. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. a + 0.25 + a2 = 4 + 0.25 Reorder the terms: 0.25 + a + a2 = 4 + 0.25 Combine like terms: 4 + 0.25 = 4.25 0.25 + a + a2 = 4.25 Factor a perfect square on the left side: (a + 0.5)(a + 0.5) = 4.25 Calculate the square root of the right side: 2.061552813 Break this problem into two subproblems by setting (a + 0.5) equal to 2.061552813 and -2.061552813.Subproblem 1
a + 0.5 = 2.061552813 Simplifying a + 0.5 = 2.061552813 Reorder the terms: 0.5 + a = 2.061552813 Solving 0.5 + a = 2.061552813 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + a = 2.061552813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + a = 2.061552813 + -0.5 a = 2.061552813 + -0.5 Combine like terms: 2.061552813 + -0.5 = 1.561552813 a = 1.561552813 Simplifying a = 1.561552813Subproblem 2
a + 0.5 = -2.061552813 Simplifying a + 0.5 = -2.061552813 Reorder the terms: 0.5 + a = -2.061552813 Solving 0.5 + a = -2.061552813 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + a = -2.061552813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + a = -2.061552813 + -0.5 a = -2.061552813 + -0.5 Combine like terms: -2.061552813 + -0.5 = -2.561552813 a = -2.561552813 Simplifying a = -2.561552813Solution
The solution to the problem is based on the solutions from the subproblems. a = {1.561552813, -2.561552813}Solution
a = {1.561552813, -2.561552813}
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