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Simplifying 3x(1 + -3x) = 2(-4x + 7) (1 * 3x + -3x * 3x) = 2(-4x + 7) (3x + -9x2) = 2(-4x + 7) Reorder the terms: 3x + -9x2 = 2(7 + -4x) 3x + -9x2 = (7 * 2 + -4x * 2) 3x + -9x2 = (14 + -8x) Solving 3x + -9x2 = 14 + -8x Solving for variable 'x'. Reorder the terms: -14 + 3x + 8x + -9x2 = 14 + -8x + -14 + 8x Combine like terms: 3x + 8x = 11x -14 + 11x + -9x2 = 14 + -8x + -14 + 8x Reorder the terms: -14 + 11x + -9x2 = 14 + -14 + -8x + 8x Combine like terms: 14 + -14 = 0 -14 + 11x + -9x2 = 0 + -8x + 8x -14 + 11x + -9x2 = -8x + 8x Combine like terms: -8x + 8x = 0 -14 + 11x + -9x2 = 0 Begin completing the square. Divide all terms by -9 the coefficient of the squared term: Divide each side by '-9'. 1.555555556 + -1.222222222x + x2 = 0 Move the constant term to the right: Add '-1.555555556' to each side of the equation. 1.555555556 + -1.222222222x + -1.555555556 + x2 = 0 + -1.555555556 Reorder the terms: 1.555555556 + -1.555555556 + -1.222222222x + x2 = 0 + -1.555555556 Combine like terms: 1.555555556 + -1.555555556 = 0.000000000 0.000000000 + -1.222222222x + x2 = 0 + -1.555555556 -1.222222222x + x2 = 0 + -1.555555556 Combine like terms: 0 + -1.555555556 = -1.555555556 -1.222222222x + x2 = -1.555555556 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 = -1.555555556 + 0.3734567900 Reorder the terms: 0.3734567900 + -1.222222222x + x2 = -1.555555556 + 0.3734567900 Combine like terms: -1.555555556 + 0.3734567900 = -1.182098766 0.3734567900 + -1.222222222x + x2 = -1.182098766 Factor a perfect square on the left side: (x + -0.611111111)(x + -0.611111111) = -1.182098766 Can't calculate square root of the right side. The solution to this equation could not be determined.
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