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Simplifying 2c2 + -7c + 19 = 0 Reorder the terms: 19 + -7c + 2c2 = 0 Solving 19 + -7c + 2c2 = 0 Solving for variable 'c'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 9.5 + -3.5c + c2 = 0 Move the constant term to the right: Add '-9.5' to each side of the equation. 9.5 + -3.5c + -9.5 + c2 = 0 + -9.5 Reorder the terms: 9.5 + -9.5 + -3.5c + c2 = 0 + -9.5 Combine like terms: 9.5 + -9.5 = 0.0 0.0 + -3.5c + c2 = 0 + -9.5 -3.5c + c2 = 0 + -9.5 Combine like terms: 0 + -9.5 = -9.5 -3.5c + c2 = -9.5 The c term is -3.5c. Take half its coefficient (-1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. -3.5c + 3.0625 + c2 = -9.5 + 3.0625 Reorder the terms: 3.0625 + -3.5c + c2 = -9.5 + 3.0625 Combine like terms: -9.5 + 3.0625 = -6.4375 3.0625 + -3.5c + c2 = -6.4375 Factor a perfect square on the left side: (c + -1.75)(c + -1.75) = -6.4375 Can't calculate square root of the right side. The solution to this equation could not be determined.
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