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Simplifying 2x2 + (x + -5) + 22 = 0 Reorder the terms: 2x2 + (-5 + x) + 22 = 0 Remove parenthesis around (-5 + x) 2x2 + -5 + x + 22 = 0 Reorder the terms: -5 + 22 + x + 2x2 = 0 Combine like terms: -5 + 22 = 17 17 + x + 2x2 = 0 Solving 17 + x + 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'. 8.5 + 0.5x + x2 = 0 Move the constant term to the right: Add '-8.5' to each side of the equation. 8.5 + 0.5x + -8.5 + x2 = 0 + -8.5 Reorder the terms: 8.5 + -8.5 + 0.5x + x2 = 0 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + 0.5x + x2 = 0 + -8.5 0.5x + x2 = 0 + -8.5 Combine like terms: 0 + -8.5 = -8.5 0.5x + x2 = -8.5 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 = -8.5 + 0.25 Reorder the terms: 0.25 + 0.5x + x2 = -8.5 + 0.25 Combine like terms: -8.5 + 0.25 = -8.25 0.25 + 0.5x + x2 = -8.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -8.25 Can't calculate square root of the right side. The solution to this equation could not be determined.
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