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Simplifying 9x2 + -8x + 9x = -9 Reorder the terms: -8x + 9x + 9x2 = -9 Combine like terms: -8x + 9x = 1x 1x + 9x2 = -9 Solving 1x + 9x2 = -9 Solving for variable 'x'. Reorder the terms: 9 + 1x + 9x2 = -9 + 9 Combine like terms: -9 + 9 = 0 9 + 1x + 9x2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 1 + 0.1111111111x + x2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + 0.1111111111x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + 0.1111111111x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 0.1111111111x + x2 = 0 + -1 0.1111111111x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 0.1111111111x + x2 = -1 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 = -1 + 0.003086419752 Reorder the terms: 0.003086419752 + 0.1111111111x + x2 = -1 + 0.003086419752 Combine like terms: -1 + 0.003086419752 = -0.996913580248 0.003086419752 + 0.1111111111x + x2 = -0.996913580248 Factor a perfect square on the left side: (x + 0.05555555555)(x + 0.05555555555) = -0.996913580248 Can't calculate square root of the right side. The solution to this equation could not be determined.
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