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Simplifying x2 + 14x = 26 Reorder the terms: 14x + x2 = 26 Solving 14x + x2 = 26 Solving for variable 'x'. Reorder the terms: -26 + 14x + x2 = 26 + -26 Combine like terms: 26 + -26 = 0 -26 + 14x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '26' to each side of the equation. -26 + 14x + 26 + x2 = 0 + 26 Reorder the terms: -26 + 26 + 14x + x2 = 0 + 26 Combine like terms: -26 + 26 = 0 0 + 14x + x2 = 0 + 26 14x + x2 = 0 + 26 Combine like terms: 0 + 26 = 26 14x + x2 = 26 The x term is 14x. Take half its coefficient (7). Square it (49) and add it to both sides. Add '49' to each side of the equation. 14x + 49 + x2 = 26 + 49 Reorder the terms: 49 + 14x + x2 = 26 + 49 Combine like terms: 26 + 49 = 75 49 + 14x + x2 = 75 Factor a perfect square on the left side: (x + 7)(x + 7) = 75 Calculate the square root of the right side: 8.660254038 Break this problem into two subproblems by setting (x + 7) equal to 8.660254038 and -8.660254038.Subproblem 1
x + 7 = 8.660254038 Simplifying x + 7 = 8.660254038 Reorder the terms: 7 + x = 8.660254038 Solving 7 + x = 8.660254038 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 8.660254038 + -7 Combine like terms: 7 + -7 = 0 0 + x = 8.660254038 + -7 x = 8.660254038 + -7 Combine like terms: 8.660254038 + -7 = 1.660254038 x = 1.660254038 Simplifying x = 1.660254038Subproblem 2
x + 7 = -8.660254038 Simplifying x + 7 = -8.660254038 Reorder the terms: 7 + x = -8.660254038 Solving 7 + x = -8.660254038 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -8.660254038 + -7 Combine like terms: 7 + -7 = 0 0 + x = -8.660254038 + -7 x = -8.660254038 + -7 Combine like terms: -8.660254038 + -7 = -15.660254038 x = -15.660254038 Simplifying x = -15.660254038Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.660254038, -15.660254038}
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