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Simplifying 0 = 9x2 + -12x + 8 Reorder the terms: 0 = 8 + -12x + 9x2 Solving 0 = 8 + -12x + 9x2 Solving for variable 'x'. Combine like terms: 0 + -8 = -8 -8 + 12x + -9x2 = 8 + -12x + 9x2 + -8 + 12x + -9x2 Reorder the terms: -8 + 12x + -9x2 = 8 + -8 + -12x + 12x + 9x2 + -9x2 Combine like terms: 8 + -8 = 0 -8 + 12x + -9x2 = 0 + -12x + 12x + 9x2 + -9x2 -8 + 12x + -9x2 = -12x + 12x + 9x2 + -9x2 Combine like terms: -12x + 12x = 0 -8 + 12x + -9x2 = 0 + 9x2 + -9x2 -8 + 12x + -9x2 = 9x2 + -9x2 Combine like terms: 9x2 + -9x2 = 0 -8 + 12x + -9x2 = 0 Begin completing the square. Divide all terms by -9 the coefficient of the squared term: Divide each side by '-9'. 0.8888888889 + -1.333333333x + x2 = 0 Move the constant term to the right: Add '-0.8888888889' to each side of the equation. 0.8888888889 + -1.333333333x + -0.8888888889 + x2 = 0 + -0.8888888889 Reorder the terms: 0.8888888889 + -0.8888888889 + -1.333333333x + x2 = 0 + -0.8888888889 Combine like terms: 0.8888888889 + -0.8888888889 = 0.0000000000 0.0000000000 + -1.333333333x + x2 = 0 + -0.8888888889 -1.333333333x + x2 = 0 + -0.8888888889 Combine like terms: 0 + -0.8888888889 = -0.8888888889 -1.333333333x + x2 = -0.8888888889 The x term is -1.333333333x. Take half its coefficient (-0.6666666665). Square it (0.4444444442) and add it to both sides. Add '0.4444444442' to each side of the equation. -1.333333333x + 0.4444444442 + x2 = -0.8888888889 + 0.4444444442 Reorder the terms: 0.4444444442 + -1.333333333x + x2 = -0.8888888889 + 0.4444444442 Combine like terms: -0.8888888889 + 0.4444444442 = -0.4444444447 0.4444444442 + -1.333333333x + x2 = -0.4444444447 Factor a perfect square on the left side: (x + -0.6666666665)(x + -0.6666666665) = -0.4444444447 Can't calculate square root of the right side. The solution to this equation could not be determined.
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