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Simplifying 2b2 + -20b + -50 = 0 Reorder the terms: -50 + -20b + 2b2 = 0 Solving -50 + -20b + 2b2 = 0 Solving for variable 'b'. Factor out the Greatest Common Factor (GCF), '2'. 2(-25 + -10b + b2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-25 + -10b + b2)' equal to zero and attempt to solve: Simplifying -25 + -10b + b2 = 0 Solving -25 + -10b + b2 = 0 Begin completing the square. Move the constant term to the right: Add '25' to each side of the equation. -25 + -10b + 25 + b2 = 0 + 25 Reorder the terms: -25 + 25 + -10b + b2 = 0 + 25 Combine like terms: -25 + 25 = 0 0 + -10b + b2 = 0 + 25 -10b + b2 = 0 + 25 Combine like terms: 0 + 25 = 25 -10b + b2 = 25 The b term is -10b. Take half its coefficient (-5). Square it (25) and add it to both sides. Add '25' to each side of the equation. -10b + 25 + b2 = 25 + 25 Reorder the terms: 25 + -10b + b2 = 25 + 25 Combine like terms: 25 + 25 = 50 25 + -10b + b2 = 50 Factor a perfect square on the left side: (b + -5)(b + -5) = 50 Calculate the square root of the right side: 7.071067812 Break this problem into two subproblems by setting (b + -5) equal to 7.071067812 and -7.071067812.Subproblem 1
b + -5 = 7.071067812 Simplifying b + -5 = 7.071067812 Reorder the terms: -5 + b = 7.071067812 Solving -5 + b = 7.071067812 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + b = 7.071067812 + 5 Combine like terms: -5 + 5 = 0 0 + b = 7.071067812 + 5 b = 7.071067812 + 5 Combine like terms: 7.071067812 + 5 = 12.071067812 b = 12.071067812 Simplifying b = 12.071067812Subproblem 2
b + -5 = -7.071067812 Simplifying b + -5 = -7.071067812 Reorder the terms: -5 + b = -7.071067812 Solving -5 + b = -7.071067812 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + b = -7.071067812 + 5 Combine like terms: -5 + 5 = 0 0 + b = -7.071067812 + 5 b = -7.071067812 + 5 Combine like terms: -7.071067812 + 5 = -2.071067812 b = -2.071067812 Simplifying b = -2.071067812Solution
The solution to the problem is based on the solutions from the subproblems. b = {12.071067812, -2.071067812}Solution
b = {12.071067812, -2.071067812}
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