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Simplifying -9b2 + 8b + -8 = 0 Reorder the terms: -8 + 8b + -9b2 = 0 Solving -8 + 8b + -9b2 = 0 Solving for variable 'b'. Begin completing the square. Divide all terms by -9 the coefficient of the squared term: Divide each side by '-9'. 0.8888888889 + -0.8888888889b + b2 = 0 Move the constant term to the right: Add '-0.8888888889' to each side of the equation. 0.8888888889 + -0.8888888889b + -0.8888888889 + b2 = 0 + -0.8888888889 Reorder the terms: 0.8888888889 + -0.8888888889 + -0.8888888889b + b2 = 0 + -0.8888888889 Combine like terms: 0.8888888889 + -0.8888888889 = 0.0000000000 0.0000000000 + -0.8888888889b + b2 = 0 + -0.8888888889 -0.8888888889b + b2 = 0 + -0.8888888889 Combine like terms: 0 + -0.8888888889 = -0.8888888889 -0.8888888889b + b2 = -0.8888888889 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 = -0.8888888889 + 0.1975308642 Reorder the terms: 0.1975308642 + -0.8888888889b + b2 = -0.8888888889 + 0.1975308642 Combine like terms: -0.8888888889 + 0.1975308642 = -0.6913580247 0.1975308642 + -0.8888888889b + b2 = -0.6913580247 Factor a perfect square on the left side: (b + -0.4444444445)(b + -0.4444444445) = -0.6913580247 Can't calculate square root of the right side. The solution to this equation could not be determined.
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