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Simplifying x2 + 13x + 38 = 0 Reorder the terms: 38 + 13x + x2 = 0 Solving 38 + 13x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-38' to each side of the equation. 38 + 13x + -38 + x2 = 0 + -38 Reorder the terms: 38 + -38 + 13x + x2 = 0 + -38 Combine like terms: 38 + -38 = 0 0 + 13x + x2 = 0 + -38 13x + x2 = 0 + -38 Combine like terms: 0 + -38 = -38 13x + x2 = -38 The x term is 13x. Take half its coefficient (6.5). Square it (42.25) and add it to both sides. Add '42.25' to each side of the equation. 13x + 42.25 + x2 = -38 + 42.25 Reorder the terms: 42.25 + 13x + x2 = -38 + 42.25 Combine like terms: -38 + 42.25 = 4.25 42.25 + 13x + x2 = 4.25 Factor a perfect square on the left side: (x + 6.5)(x + 6.5) = 4.25 Calculate the square root of the right side: 2.061552813 Break this problem into two subproblems by setting (x + 6.5) equal to 2.061552813 and -2.061552813.Subproblem 1
x + 6.5 = 2.061552813 Simplifying x + 6.5 = 2.061552813 Reorder the terms: 6.5 + x = 2.061552813 Solving 6.5 + x = 2.061552813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.5' to each side of the equation. 6.5 + -6.5 + x = 2.061552813 + -6.5 Combine like terms: 6.5 + -6.5 = 0.0 0.0 + x = 2.061552813 + -6.5 x = 2.061552813 + -6.5 Combine like terms: 2.061552813 + -6.5 = -4.438447187 x = -4.438447187 Simplifying x = -4.438447187Subproblem 2
x + 6.5 = -2.061552813 Simplifying x + 6.5 = -2.061552813 Reorder the terms: 6.5 + x = -2.061552813 Solving 6.5 + x = -2.061552813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.5' to each side of the equation. 6.5 + -6.5 + x = -2.061552813 + -6.5 Combine like terms: 6.5 + -6.5 = 0.0 0.0 + x = -2.061552813 + -6.5 x = -2.061552813 + -6.5 Combine like terms: -2.061552813 + -6.5 = -8.561552813 x = -8.561552813 Simplifying x = -8.561552813Solution
The solution to the problem is based on the solutions from the subproblems. x = {-4.438447187, -8.561552813}
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