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Simplifying 9b2 + 8b = -2 Reorder the terms: 8b + 9b2 = -2 Solving 8b + 9b2 = -2 Solving for variable 'b'. Reorder the terms: 2 + 8b + 9b2 = -2 + 2 Combine like terms: -2 + 2 = 0 2 + 8b + 9b2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 0.2222222222 + 0.8888888889b + b2 = 0 Move the constant term to the right: Add '-0.2222222222' to each side of the equation. 0.2222222222 + 0.8888888889b + -0.2222222222 + b2 = 0 + -0.2222222222 Reorder the terms: 0.2222222222 + -0.2222222222 + 0.8888888889b + b2 = 0 + -0.2222222222 Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000 0.0000000000 + 0.8888888889b + b2 = 0 + -0.2222222222 0.8888888889b + b2 = 0 + -0.2222222222 Combine like terms: 0 + -0.2222222222 = -0.2222222222 0.8888888889b + b2 = -0.2222222222 The b term is 0.8888888889b. Take half its coefficient (0.4444444445). Square it (0.1975308642) and add it to both sides. Add '0.1975308642' to each side of the equation. 0.8888888889b + 0.1975308642 + b2 = -0.2222222222 + 0.1975308642 Reorder the terms: 0.1975308642 + 0.8888888889b + b2 = -0.2222222222 + 0.1975308642 Combine like terms: -0.2222222222 + 0.1975308642 = -0.024691358 0.1975308642 + 0.8888888889b + b2 = -0.024691358 Factor a perfect square on the left side: (b + 0.4444444445)(b + 0.4444444445) = -0.024691358 Can't calculate square root of the right side. The solution to this equation could not be determined.
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