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Simplifying 8b2 + -8b + -4 = 0 Reorder the terms: -4 + -8b + 8b2 = 0 Solving -4 + -8b + 8b2 = 0 Solving for variable 'b'. Factor out the Greatest Common Factor (GCF), '4'. 4(-1 + -2b + 2b2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(-1 + -2b + 2b2)' equal to zero and attempt to solve: Simplifying -1 + -2b + 2b2 = 0 Solving -1 + -2b + 2b2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -0.5 + -1b + b2 = 0 Move the constant term to the right: Add '0.5' to each side of the equation. -0.5 + -1b + 0.5 + b2 = 0 + 0.5 Reorder the terms: -0.5 + 0.5 + -1b + b2 = 0 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + -1b + b2 = 0 + 0.5 -1b + b2 = 0 + 0.5 Combine like terms: 0 + 0.5 = 0.5 -1b + b2 = 0.5 The b term is -1b. 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. -1b + 0.25 + b2 = 0.5 + 0.25 Reorder the terms: 0.25 + -1b + b2 = 0.5 + 0.25 Combine like terms: 0.5 + 0.25 = 0.75 0.25 + -1b + b2 = 0.75 Factor a perfect square on the left side: (b + -0.5)(b + -0.5) = 0.75 Calculate the square root of the right side: 0.866025404 Break this problem into two subproblems by setting (b + -0.5) equal to 0.866025404 and -0.866025404.Subproblem 1
b + -0.5 = 0.866025404 Simplifying b + -0.5 = 0.866025404 Reorder the terms: -0.5 + b = 0.866025404 Solving -0.5 + b = 0.866025404 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + b = 0.866025404 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + b = 0.866025404 + 0.5 b = 0.866025404 + 0.5 Combine like terms: 0.866025404 + 0.5 = 1.366025404 b = 1.366025404 Simplifying b = 1.366025404Subproblem 2
b + -0.5 = -0.866025404 Simplifying b + -0.5 = -0.866025404 Reorder the terms: -0.5 + b = -0.866025404 Solving -0.5 + b = -0.866025404 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + b = -0.866025404 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + b = -0.866025404 + 0.5 b = -0.866025404 + 0.5 Combine like terms: -0.866025404 + 0.5 = -0.366025404 b = -0.366025404 Simplifying b = -0.366025404Solution
The solution to the problem is based on the solutions from the subproblems. b = {1.366025404, -0.366025404}Solution
b = {1.366025404, -0.366025404}
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