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Simplifying c2 + -2c + 25 = 0 Reorder the terms: 25 + -2c + c2 = 0 Solving 25 + -2c + c2 = 0 Solving for variable 'c'. Begin completing the square. Move the constant term to the right: Add '-25' to each side of the equation. 25 + -2c + -25 + c2 = 0 + -25 Reorder the terms: 25 + -25 + -2c + c2 = 0 + -25 Combine like terms: 25 + -25 = 0 0 + -2c + c2 = 0 + -25 -2c + c2 = 0 + -25 Combine like terms: 0 + -25 = -25 -2c + c2 = -25 The c term is -2c. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2c + 1 + c2 = -25 + 1 Reorder the terms: 1 + -2c + c2 = -25 + 1 Combine like terms: -25 + 1 = -24 1 + -2c + c2 = -24 Factor a perfect square on the left side: (c + -1)(c + -1) = -24 Can't calculate square root of the right side. The solution to this equation could not be determined.
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