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Simplifying 9x2 + -11x = -9 Reorder the terms: -11x + 9x2 = -9 Solving -11x + 9x2 = -9 Solving for variable 'x'. Reorder the terms: 9 + -11x + 9x2 = -9 + 9 Combine like terms: -9 + 9 = 0 9 + -11x + 9x2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 1 + -1.222222222x + x2 = 0 Move the constant term to the right: Add '-1' to each side of the equation. 1 + -1.222222222x + -1 + x2 = 0 + -1 Reorder the terms: 1 + -1 + -1.222222222x + x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1.222222222x + x2 = 0 + -1 -1.222222222x + x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -1.222222222x + x2 = -1 The x term is -1.222222222x. Take half its coefficient (-0.611111111). Square it (0.3734567900) and add it to both sides. Add '0.3734567900' to each side of the equation. -1.222222222x + 0.3734567900 + x2 = -1 + 0.3734567900 Reorder the terms: 0.3734567900 + -1.222222222x + x2 = -1 + 0.3734567900 Combine like terms: -1 + 0.3734567900 = -0.62654321 0.3734567900 + -1.222222222x + x2 = -0.62654321 Factor a perfect square on the left side: (x + -0.611111111)(x + -0.611111111) = -0.62654321 Can't calculate square root of the right side. The solution to this equation could not be determined.
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