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Simplifying b2 + 8b + -3 = 0 Reorder the terms: -3 + 8b + b2 = 0 Solving -3 + 8b + b2 = 0 Solving for variable 'b'. Begin completing the square. Move the constant term to the right: Add '3' to each side of the equation. -3 + 8b + 3 + b2 = 0 + 3 Reorder the terms: -3 + 3 + 8b + b2 = 0 + 3 Combine like terms: -3 + 3 = 0 0 + 8b + b2 = 0 + 3 8b + b2 = 0 + 3 Combine like terms: 0 + 3 = 3 8b + b2 = 3 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 = 3 + 16 Reorder the terms: 16 + 8b + b2 = 3 + 16 Combine like terms: 3 + 16 = 19 16 + 8b + b2 = 19 Factor a perfect square on the left side: (b + 4)(b + 4) = 19 Calculate the square root of the right side: 4.358898944 Break this problem into two subproblems by setting (b + 4) equal to 4.358898944 and -4.358898944.Subproblem 1
b + 4 = 4.358898944 Simplifying b + 4 = 4.358898944 Reorder the terms: 4 + b = 4.358898944 Solving 4 + b = 4.358898944 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 = 4.358898944 + -4 Combine like terms: 4 + -4 = 0 0 + b = 4.358898944 + -4 b = 4.358898944 + -4 Combine like terms: 4.358898944 + -4 = 0.358898944 b = 0.358898944 Simplifying b = 0.358898944Subproblem 2
b + 4 = -4.358898944 Simplifying b + 4 = -4.358898944 Reorder the terms: 4 + b = -4.358898944 Solving 4 + b = -4.358898944 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 = -4.358898944 + -4 Combine like terms: 4 + -4 = 0 0 + b = -4.358898944 + -4 b = -4.358898944 + -4 Combine like terms: -4.358898944 + -4 = -8.358898944 b = -8.358898944 Simplifying b = -8.358898944Solution
The solution to the problem is based on the solutions from the subproblems. b = {0.358898944, -8.358898944}
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