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Simplifying 9x2 + 64x + 144 = 0 Reorder the terms: 144 + 64x + 9x2 = 0 Solving 144 + 64x + 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'. 16 + 7.111111111x + x2 = 0 Move the constant term to the right: Add '-16' to each side of the equation. 16 + 7.111111111x + -16 + x2 = 0 + -16 Reorder the terms: 16 + -16 + 7.111111111x + x2 = 0 + -16 Combine like terms: 16 + -16 = 0 0 + 7.111111111x + x2 = 0 + -16 7.111111111x + x2 = 0 + -16 Combine like terms: 0 + -16 = -16 7.111111111x + x2 = -16 The x term is 7.111111111x. Take half its coefficient (3.555555556). Square it (12.64197531) and add it to both sides. Add '12.64197531' to each side of the equation. 7.111111111x + 12.64197531 + x2 = -16 + 12.64197531 Reorder the terms: 12.64197531 + 7.111111111x + x2 = -16 + 12.64197531 Combine like terms: -16 + 12.64197531 = -3.35802469 12.64197531 + 7.111111111x + x2 = -3.35802469 Factor a perfect square on the left side: (x + 3.555555556)(x + 3.555555556) = -3.35802469 Can't calculate square root of the right side. The solution to this equation could not be determined.
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