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Simplifying b2 + -8b + 11 = 0 Reorder the terms: 11 + -8b + b2 = 0 Solving 11 + -8b + b2 = 0 Solving for variable 'b'. Begin completing the square. Move the constant term to the right: Add '-11' to each side of the equation. 11 + -8b + -11 + b2 = 0 + -11 Reorder the terms: 11 + -11 + -8b + b2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -8b + b2 = 0 + -11 -8b + b2 = 0 + -11 Combine like terms: 0 + -11 = -11 -8b + b2 = -11 The b term is -8b. Take half its coefficient (-4). Square it (16) and add it to both sides. Add '16' to each side of the equation. -8b + 16 + b2 = -11 + 16 Reorder the terms: 16 + -8b + b2 = -11 + 16 Combine like terms: -11 + 16 = 5 16 + -8b + b2 = 5 Factor a perfect square on the left side: (b + -4)(b + -4) = 5 Calculate the square root of the right side: 2.236067978 Break this problem into two subproblems by setting (b + -4) equal to 2.236067978 and -2.236067978.Subproblem 1
b + -4 = 2.236067978 Simplifying b + -4 = 2.236067978 Reorder the terms: -4 + b = 2.236067978 Solving -4 + b = 2.236067978 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + b = 2.236067978 + 4 Combine like terms: -4 + 4 = 0 0 + b = 2.236067978 + 4 b = 2.236067978 + 4 Combine like terms: 2.236067978 + 4 = 6.236067978 b = 6.236067978 Simplifying b = 6.236067978Subproblem 2
b + -4 = -2.236067978 Simplifying b + -4 = -2.236067978 Reorder the terms: -4 + b = -2.236067978 Solving -4 + b = -2.236067978 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + b = -2.236067978 + 4 Combine like terms: -4 + 4 = 0 0 + b = -2.236067978 + 4 b = -2.236067978 + 4 Combine like terms: -2.236067978 + 4 = 1.763932022 b = 1.763932022 Simplifying b = 1.763932022Solution
The solution to the problem is based on the solutions from the subproblems. b = {6.236067978, 1.763932022}
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