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Simplifying 0 = 0.5x2 + -1x + 4 Reorder the terms: 0 = 4 + -1x + 0.5x2 Solving 0 = 4 + -1x + 0.5x2 Solving for variable 'x'. Combine like terms: 0 + -4 = -4 -4 + x + -0.5x2 = 4 + -1x + 0.5x2 + -4 + x + -0.5x2 Reorder the terms: -4 + x + -0.5x2 = 4 + -4 + -1x + x + 0.5x2 + -0.5x2 Combine like terms: 4 + -4 = 0 -4 + x + -0.5x2 = 0 + -1x + x + 0.5x2 + -0.5x2 -4 + x + -0.5x2 = -1x + x + 0.5x2 + -0.5x2 Combine like terms: -1x + x = 0 -4 + x + -0.5x2 = 0 + 0.5x2 + -0.5x2 -4 + x + -0.5x2 = 0.5x2 + -0.5x2 Combine like terms: 0.5x2 + -0.5x2 = 0.0 -4 + x + -0.5x2 = 0.0 Begin completing the square. Divide all terms by -0.5 the coefficient of the squared term: Divide each side by '-0.5'. 8 + -2x + x2 = 0 Move the constant term to the right: Add '-8' to each side of the equation. 8 + -2x + -8 + x2 = 0 + -8 Reorder the terms: 8 + -8 + -2x + x2 = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -2x + x2 = 0 + -8 -2x + x2 = 0 + -8 Combine like terms: 0 + -8 = -8 -2x + x2 = -8 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. -2x + 0.25 + x2 = -8 + 0.25 Reorder the terms: 0.25 + -2x + x2 = -8 + 0.25 Combine like terms: -8 + 0.25 = -7.75 0.25 + -2x + x2 = -7.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -7.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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