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Simplifying 9x2 + -1x + 81 = 0 Reorder the terms: 81 + -1x + 9x2 = 0 Solving 81 + -1x + 9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 9 + -0.1111111111x + x2 = 0 Move the constant term to the right: Add '-9' to each side of the equation. 9 + -0.1111111111x + -9 + x2 = 0 + -9 Reorder the terms: 9 + -9 + -0.1111111111x + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -0.1111111111x + x2 = 0 + -9 -0.1111111111x + x2 = 0 + -9 Combine like terms: 0 + -9 = -9 -0.1111111111x + x2 = -9 The x term is -0.1111111111x. Take half its coefficient (-0.05555555555). Square it (0.003086419752) and add it to both sides. Add '0.003086419752' to each side of the equation. -0.1111111111x + 0.003086419752 + x2 = -9 + 0.003086419752 Reorder the terms: 0.003086419752 + -0.1111111111x + x2 = -9 + 0.003086419752 Combine like terms: -9 + 0.003086419752 = -8.996913580248 0.003086419752 + -0.1111111111x + x2 = -8.996913580248 Factor a perfect square on the left side: (x + -0.05555555555)(x + -0.05555555555) = -8.996913580248 Can't calculate square root of the right side. The solution to this equation could not be determined.
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