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Simplifying b2 + 2b + -100 = 0 Reorder the terms: -100 + 2b + b2 = 0 Solving -100 + 2b + b2 = 0 Solving for variable 'b'. Begin completing the square. Move the constant term to the right: Add '100' to each side of the equation. -100 + 2b + 100 + b2 = 0 + 100 Reorder the terms: -100 + 100 + 2b + b2 = 0 + 100 Combine like terms: -100 + 100 = 0 0 + 2b + b2 = 0 + 100 2b + b2 = 0 + 100 Combine like terms: 0 + 100 = 100 2b + b2 = 100 The b term is 2b. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2b + 1 + b2 = 100 + 1 Reorder the terms: 1 + 2b + b2 = 100 + 1 Combine like terms: 100 + 1 = 101 1 + 2b + b2 = 101 Factor a perfect square on the left side: (b + 1)(b + 1) = 101 Calculate the square root of the right side: 10.049875621 Break this problem into two subproblems by setting (b + 1) equal to 10.049875621 and -10.049875621.Subproblem 1
b + 1 = 10.049875621 Simplifying b + 1 = 10.049875621 Reorder the terms: 1 + b = 10.049875621 Solving 1 + b = 10.049875621 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + b = 10.049875621 + -1 Combine like terms: 1 + -1 = 0 0 + b = 10.049875621 + -1 b = 10.049875621 + -1 Combine like terms: 10.049875621 + -1 = 9.049875621 b = 9.049875621 Simplifying b = 9.049875621Subproblem 2
b + 1 = -10.049875621 Simplifying b + 1 = -10.049875621 Reorder the terms: 1 + b = -10.049875621 Solving 1 + b = -10.049875621 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + b = -10.049875621 + -1 Combine like terms: 1 + -1 = 0 0 + b = -10.049875621 + -1 b = -10.049875621 + -1 Combine like terms: -10.049875621 + -1 = -11.049875621 b = -11.049875621 Simplifying b = -11.049875621Solution
The solution to the problem is based on the solutions from the subproblems. b = {9.049875621, -11.049875621}
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