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Simplifying u2 + -7u = 10 Reorder the terms: -7u + u2 = 10 Solving -7u + u2 = 10 Solving for variable 'u'. Reorder the terms: -10 + -7u + u2 = 10 + -10 Combine like terms: 10 + -10 = 0 -10 + -7u + u2 = 0 Begin completing the square. Move the constant term to the right: Add '10' to each side of the equation. -10 + -7u + 10 + u2 = 0 + 10 Reorder the terms: -10 + 10 + -7u + u2 = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -7u + u2 = 0 + 10 -7u + u2 = 0 + 10 Combine like terms: 0 + 10 = 10 -7u + u2 = 10 The u term is -7u. Take half its coefficient (-3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. -7u + 12.25 + u2 = 10 + 12.25 Reorder the terms: 12.25 + -7u + u2 = 10 + 12.25 Combine like terms: 10 + 12.25 = 22.25 12.25 + -7u + u2 = 22.25 Factor a perfect square on the left side: (u + -3.5)(u + -3.5) = 22.25 Calculate the square root of the right side: 4.716990566 Break this problem into two subproblems by setting (u + -3.5) equal to 4.716990566 and -4.716990566.Subproblem 1
u + -3.5 = 4.716990566 Simplifying u + -3.5 = 4.716990566 Reorder the terms: -3.5 + u = 4.716990566 Solving -3.5 + u = 4.716990566 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + u = 4.716990566 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + u = 4.716990566 + 3.5 u = 4.716990566 + 3.5 Combine like terms: 4.716990566 + 3.5 = 8.216990566 u = 8.216990566 Simplifying u = 8.216990566Subproblem 2
u + -3.5 = -4.716990566 Simplifying u + -3.5 = -4.716990566 Reorder the terms: -3.5 + u = -4.716990566 Solving -3.5 + u = -4.716990566 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + u = -4.716990566 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + u = -4.716990566 + 3.5 u = -4.716990566 + 3.5 Combine like terms: -4.716990566 + 3.5 = -1.216990566 u = -1.216990566 Simplifying u = -1.216990566Solution
The solution to the problem is based on the solutions from the subproblems. u = {8.216990566, -1.216990566}
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