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Simplifying x2 + -7x + -14 = 0 Reorder the terms: -14 + -7x + x2 = 0 Solving -14 + -7x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '14' to each side of the equation. -14 + -7x + 14 + x2 = 0 + 14 Reorder the terms: -14 + 14 + -7x + x2 = 0 + 14 Combine like terms: -14 + 14 = 0 0 + -7x + x2 = 0 + 14 -7x + x2 = 0 + 14 Combine like terms: 0 + 14 = 14 -7x + x2 = 14 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 = 14 + 12.25 Reorder the terms: 12.25 + -7x + x2 = 14 + 12.25 Combine like terms: 14 + 12.25 = 26.25 12.25 + -7x + x2 = 26.25 Factor a perfect square on the left side: (x + -3.5)(x + -3.5) = 26.25 Calculate the square root of the right side: 5.123475383 Break this problem into two subproblems by setting (x + -3.5) equal to 5.123475383 and -5.123475383.Subproblem 1
x + -3.5 = 5.123475383 Simplifying x + -3.5 = 5.123475383 Reorder the terms: -3.5 + x = 5.123475383 Solving -3.5 + x = 5.123475383 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 = 5.123475383 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 5.123475383 + 3.5 x = 5.123475383 + 3.5 Combine like terms: 5.123475383 + 3.5 = 8.623475383 x = 8.623475383 Simplifying x = 8.623475383Subproblem 2
x + -3.5 = -5.123475383 Simplifying x + -3.5 = -5.123475383 Reorder the terms: -3.5 + x = -5.123475383 Solving -3.5 + x = -5.123475383 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 = -5.123475383 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -5.123475383 + 3.5 x = -5.123475383 + 3.5 Combine like terms: -5.123475383 + 3.5 = -1.623475383 x = -1.623475383 Simplifying x = -1.623475383Solution
The solution to the problem is based on the solutions from the subproblems. x = {8.623475383, -1.623475383}
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