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Simplifying 5b2 + -1b + 4 = 0 Reorder the terms: 4 + -1b + 5b2 = 0 Solving 4 + -1b + 5b2 = 0 Solving for variable 'b'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.8 + -0.2b + b2 = 0 Move the constant term to the right: Add '-0.8' to each side of the equation. 0.8 + -0.2b + -0.8 + b2 = 0 + -0.8 Reorder the terms: 0.8 + -0.8 + -0.2b + b2 = 0 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + -0.2b + b2 = 0 + -0.8 -0.2b + b2 = 0 + -0.8 Combine like terms: 0 + -0.8 = -0.8 -0.2b + b2 = -0.8 The b term is -0.2b. Take half its coefficient (-0.1). Square it (0.01) and add it to both sides. Add '0.01' to each side of the equation. -0.2b + 0.01 + b2 = -0.8 + 0.01 Reorder the terms: 0.01 + -0.2b + b2 = -0.8 + 0.01 Combine like terms: -0.8 + 0.01 = -0.79 0.01 + -0.2b + b2 = -0.79 Factor a perfect square on the left side: (b + -0.1)(b + -0.1) = -0.79 Can't calculate square root of the right side. The solution to this equation could not be determined.
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