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Simplifying u2 + 11u + 128 = 0 Reorder the terms: 128 + 11u + u2 = 0 Solving 128 + 11u + u2 = 0 Solving for variable 'u'. Begin completing the square. Move the constant term to the right: Add '-128' to each side of the equation. 128 + 11u + -128 + u2 = 0 + -128 Reorder the terms: 128 + -128 + 11u + u2 = 0 + -128 Combine like terms: 128 + -128 = 0 0 + 11u + u2 = 0 + -128 11u + u2 = 0 + -128 Combine like terms: 0 + -128 = -128 11u + u2 = -128 The u term is 11u. Take half its coefficient (5.5). Square it (30.25) and add it to both sides. Add '30.25' to each side of the equation. 11u + 30.25 + u2 = -128 + 30.25 Reorder the terms: 30.25 + 11u + u2 = -128 + 30.25 Combine like terms: -128 + 30.25 = -97.75 30.25 + 11u + u2 = -97.75 Factor a perfect square on the left side: (u + 5.5)(u + 5.5) = -97.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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