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Simplifying 4u2 + 9u + -22 = 0 Reorder the terms: -22 + 9u + 4u2 = 0 Solving -22 + 9u + 4u2 = 0 Solving for variable 'u'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -5.5 + 2.25u + u2 = 0 Move the constant term to the right: Add '5.5' to each side of the equation. -5.5 + 2.25u + 5.5 + u2 = 0 + 5.5 Reorder the terms: -5.5 + 5.5 + 2.25u + u2 = 0 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + 2.25u + u2 = 0 + 5.5 2.25u + u2 = 0 + 5.5 Combine like terms: 0 + 5.5 = 5.5 2.25u + u2 = 5.5 The u term is 2.25u. Take half its coefficient (1.125). Square it (1.265625) and add it to both sides. Add '1.265625' to each side of the equation. 2.25u + 1.265625 + u2 = 5.5 + 1.265625 Reorder the terms: 1.265625 + 2.25u + u2 = 5.5 + 1.265625 Combine like terms: 5.5 + 1.265625 = 6.765625 1.265625 + 2.25u + u2 = 6.765625 Factor a perfect square on the left side: (u + 1.125)(u + 1.125) = 6.765625 Calculate the square root of the right side: 2.601081506 Break this problem into two subproblems by setting (u + 1.125) equal to 2.601081506 and -2.601081506.Subproblem 1
u + 1.125 = 2.601081506 Simplifying u + 1.125 = 2.601081506 Reorder the terms: 1.125 + u = 2.601081506 Solving 1.125 + u = 2.601081506 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + u = 2.601081506 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + u = 2.601081506 + -1.125 u = 2.601081506 + -1.125 Combine like terms: 2.601081506 + -1.125 = 1.476081506 u = 1.476081506 Simplifying u = 1.476081506Subproblem 2
u + 1.125 = -2.601081506 Simplifying u + 1.125 = -2.601081506 Reorder the terms: 1.125 + u = -2.601081506 Solving 1.125 + u = -2.601081506 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-1.125' to each side of the equation. 1.125 + -1.125 + u = -2.601081506 + -1.125 Combine like terms: 1.125 + -1.125 = 0.000 0.000 + u = -2.601081506 + -1.125 u = -2.601081506 + -1.125 Combine like terms: -2.601081506 + -1.125 = -3.726081506 u = -3.726081506 Simplifying u = -3.726081506Solution
The solution to the problem is based on the solutions from the subproblems. u = {1.476081506, -3.726081506}
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