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Simplifying x + 3x + -3 + 2x2 + 8 + -5x = 0 Reorder the terms: -3 + 8 + x + 3x + -5x + 2x2 = 0 Combine like terms: -3 + 8 = 5 5 + x + 3x + -5x + 2x2 = 0 Combine like terms: x + 3x = 4x 5 + 4x + -5x + 2x2 = 0 Combine like terms: 4x + -5x = -1x 5 + -1x + 2x2 = 0 Solving 5 + -1x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 2.5 + -0.5x + x2 = 0 Move the constant term to the right: Add '-2.5' to each side of the equation. 2.5 + -0.5x + -2.5 + x2 = 0 + -2.5 Reorder the terms: 2.5 + -2.5 + -0.5x + x2 = 0 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + -0.5x + x2 = 0 + -2.5 -0.5x + x2 = 0 + -2.5 Combine like terms: 0 + -2.5 = -2.5 -0.5x + x2 = -2.5 The x term is -0.5x. Take half its coefficient (-0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. -0.5x + 0.0625 + x2 = -2.5 + 0.0625 Reorder the terms: 0.0625 + -0.5x + x2 = -2.5 + 0.0625 Combine like terms: -2.5 + 0.0625 = -2.4375 0.0625 + -0.5x + x2 = -2.4375 Factor a perfect square on the left side: (x + -0.25)(x + -0.25) = -2.4375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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