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Simplifying 2x2 + 0.5x + 5 = 0 Reorder the terms: 5 + 0.5x + 2x2 = 0 Solving 5 + 0.5x + 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 + 0.25x + x2 = 0 Move the constant term to the right: Add '-2.5' to each side of the equation. 2.5 + 0.25x + -2.5 + x2 = 0 + -2.5 Reorder the terms: 2.5 + -2.5 + 0.25x + x2 = 0 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + 0.25x + x2 = 0 + -2.5 0.25x + x2 = 0 + -2.5 Combine like terms: 0 + -2.5 = -2.5 0.25x + x2 = -2.5 The x term is 0.25x. Take half its coefficient (0.125). Square it (0.015625) and add it to both sides. Add '0.015625' to each side of the equation. 0.25x + 0.015625 + x2 = -2.5 + 0.015625 Reorder the terms: 0.015625 + 0.25x + x2 = -2.5 + 0.015625 Combine like terms: -2.5 + 0.015625 = -2.484375 0.015625 + 0.25x + x2 = -2.484375 Factor a perfect square on the left side: (x + 0.125)(x + 0.125) = -2.484375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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