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Simplifying -2x2 = -1x + 4 Reorder the terms: -2x2 = 4 + -1x Solving -2x2 = 4 + -1x Solving for variable 'x'. Reorder the terms: -4 + x + -2x2 = 4 + -1x + -4 + x Reorder the terms: -4 + x + -2x2 = 4 + -4 + -1x + x Combine like terms: 4 + -4 = 0 -4 + x + -2x2 = 0 + -1x + x -4 + x + -2x2 = -1x + x Combine like terms: -1x + x = 0 -4 + x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. 2 + -0.5x + x2 = 0 Move the constant term to the right: Add '-2' to each side of the equation. 2 + -0.5x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + -0.5x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -0.5x + x2 = 0 + -2 -0.5x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 -0.5x + x2 = -2 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -0.5x + 0.25 + x2 = -2 + 0.25 Reorder the terms: 0.25 + -0.5x + x2 = -2 + 0.25 Combine like terms: -2 + 0.25 = -1.75 0.25 + -0.5x + x2 = -1.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -1.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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