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Simplifying 4b2 = 2b + -9 Reorder the terms: 4b2 = -9 + 2b Solving 4b2 = -9 + 2b Solving for variable 'b'. Reorder the terms: 9 + -2b + 4b2 = -9 + 2b + 9 + -2b Reorder the terms: 9 + -2b + 4b2 = -9 + 9 + 2b + -2b Combine like terms: -9 + 9 = 0 9 + -2b + 4b2 = 0 + 2b + -2b 9 + -2b + 4b2 = 2b + -2b Combine like terms: 2b + -2b = 0 9 + -2b + 4b2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 2.25 + -0.5b + b2 = 0 Move the constant term to the right: Add '-2.25' to each side of the equation. 2.25 + -0.5b + -2.25 + b2 = 0 + -2.25 Reorder the terms: 2.25 + -2.25 + -0.5b + b2 = 0 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + -0.5b + b2 = 0 + -2.25 -0.5b + b2 = 0 + -2.25 Combine like terms: 0 + -2.25 = -2.25 -0.5b + b2 = -2.25 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 = -2.25 + 0.0625 Reorder the terms: 0.0625 + -0.5b + b2 = -2.25 + 0.0625 Combine like terms: -2.25 + 0.0625 = -2.1875 0.0625 + -0.5b + b2 = -2.1875 Factor a perfect square on the left side: (b + -0.25)(b + -0.25) = -2.1875 Can't calculate square root of the right side. The solution to this equation could not be determined.
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