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Simplifying 72x2 + -8x + 9 = 0 Reorder the terms: 9 + -8x + 72x2 = 0 Solving 9 + -8x + 72x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 72 the coefficient of the squared term: Divide each side by '72'. 0.125 + -0.1111111111x + x2 = 0 Move the constant term to the right: Add '-0.125' to each side of the equation. 0.125 + -0.1111111111x + -0.125 + x2 = 0 + -0.125 Reorder the terms: 0.125 + -0.125 + -0.1111111111x + x2 = 0 + -0.125 Combine like terms: 0.125 + -0.125 = 0.000 0.000 + -0.1111111111x + x2 = 0 + -0.125 -0.1111111111x + x2 = 0 + -0.125 Combine like terms: 0 + -0.125 = -0.125 -0.1111111111x + x2 = -0.125 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 = -0.125 + 0.003086419752 Reorder the terms: 0.003086419752 + -0.1111111111x + x2 = -0.125 + 0.003086419752 Combine like terms: -0.125 + 0.003086419752 = -0.121913580248 0.003086419752 + -0.1111111111x + x2 = -0.121913580248 Factor a perfect square on the left side: (x + -0.05555555555)(x + -0.05555555555) = -0.121913580248 Can't calculate square root of the right side. The solution to this equation could not be determined.
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