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Simplifying 4b2 + -4 = -3b Reorder the terms: -4 + 4b2 = -3b Solving -4 + 4b2 = -3b Solving for variable 'b'. Reorder the terms: -4 + 3b + 4b2 = -3b + 3b Combine like terms: -3b + 3b = 0 -4 + 3b + 4b2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -1 + 0.75b + b2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + 0.75b + 1 + b2 = 0 + 1 Reorder the terms: -1 + 1 + 0.75b + b2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 0.75b + b2 = 0 + 1 0.75b + b2 = 0 + 1 Combine like terms: 0 + 1 = 1 0.75b + b2 = 1 The b term is 0.75b. Take half its coefficient (0.375). Square it (0.140625) and add it to both sides. Add '0.140625' to each side of the equation. 0.75b + 0.140625 + b2 = 1 + 0.140625 Reorder the terms: 0.140625 + 0.75b + b2 = 1 + 0.140625 Combine like terms: 1 + 0.140625 = 1.140625 0.140625 + 0.75b + b2 = 1.140625 Factor a perfect square on the left side: (b + 0.375)(b + 0.375) = 1.140625 Calculate the square root of the right side: 1.068000468 Break this problem into two subproblems by setting (b + 0.375) equal to 1.068000468 and -1.068000468.Subproblem 1
b + 0.375 = 1.068000468 Simplifying b + 0.375 = 1.068000468 Reorder the terms: 0.375 + b = 1.068000468 Solving 0.375 + b = 1.068000468 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + b = 1.068000468 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + b = 1.068000468 + -0.375 b = 1.068000468 + -0.375 Combine like terms: 1.068000468 + -0.375 = 0.693000468 b = 0.693000468 Simplifying b = 0.693000468Subproblem 2
b + 0.375 = -1.068000468 Simplifying b + 0.375 = -1.068000468 Reorder the terms: 0.375 + b = -1.068000468 Solving 0.375 + b = -1.068000468 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + b = -1.068000468 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + b = -1.068000468 + -0.375 b = -1.068000468 + -0.375 Combine like terms: -1.068000468 + -0.375 = -1.443000468 b = -1.443000468 Simplifying b = -1.443000468Solution
The solution to the problem is based on the solutions from the subproblems. b = {0.693000468, -1.443000468}
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