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Simplifying 4b2 + 2b + 5 = 0 Reorder the terms: 5 + 2b + 4b2 = 0 Solving 5 + 2b + 4b2 = 0 Solving for variable 'b'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 1.25 + 0.5b + b2 = 0 Move the constant term to the right: Add '-1.25' to each side of the equation. 1.25 + 0.5b + -1.25 + b2 = 0 + -1.25 Reorder the terms: 1.25 + -1.25 + 0.5b + b2 = 0 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + 0.5b + b2 = 0 + -1.25 0.5b + b2 = 0 + -1.25 Combine like terms: 0 + -1.25 = -1.25 0.5b + b2 = -1.25 The b term is 0.5b. Take half its coefficient (0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. 0.5b + 0.0625 + b2 = -1.25 + 0.0625 Reorder the terms: 0.0625 + 0.5b + b2 = -1.25 + 0.0625 Combine like terms: -1.25 + 0.0625 = -1.1875 0.0625 + 0.5b + b2 = -1.1875 Factor a perfect square on the left side: (b + 0.25)(b + 0.25) = -1.1875 Can't calculate square root of the right side. The solution to this equation could not be determined.
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