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Simplifying x2 + 7x + -17 = 0 Reorder the terms: -17 + 7x + x2 = 0 Solving -17 + 7x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '17' to each side of the equation. -17 + 7x + 17 + x2 = 0 + 17 Reorder the terms: -17 + 17 + 7x + x2 = 0 + 17 Combine like terms: -17 + 17 = 0 0 + 7x + x2 = 0 + 17 7x + x2 = 0 + 17 Combine like terms: 0 + 17 = 17 7x + x2 = 17 The x term is 7x. 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. 7x + 12.25 + x2 = 17 + 12.25 Reorder the terms: 12.25 + 7x + x2 = 17 + 12.25 Combine like terms: 17 + 12.25 = 29.25 12.25 + 7x + x2 = 29.25 Factor a perfect square on the left side: (x + 3.5)(x + 3.5) = 29.25 Calculate the square root of the right side: 5.408326913 Break this problem into two subproblems by setting (x + 3.5) equal to 5.408326913 and -5.408326913.Subproblem 1
x + 3.5 = 5.408326913 Simplifying x + 3.5 = 5.408326913 Reorder the terms: 3.5 + x = 5.408326913 Solving 3.5 + x = 5.408326913 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 5.408326913 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 5.408326913 + -3.5 x = 5.408326913 + -3.5 Combine like terms: 5.408326913 + -3.5 = 1.908326913 x = 1.908326913 Simplifying x = 1.908326913Subproblem 2
x + 3.5 = -5.408326913 Simplifying x + 3.5 = -5.408326913 Reorder the terms: 3.5 + x = -5.408326913 Solving 3.5 + x = -5.408326913 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -5.408326913 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -5.408326913 + -3.5 x = -5.408326913 + -3.5 Combine like terms: -5.408326913 + -3.5 = -8.908326913 x = -8.908326913 Simplifying x = -8.908326913Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.908326913, -8.908326913}
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