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Simplifying x2 + 38x + 7 = 0 Reorder the terms: 7 + 38x + x2 = 0 Solving 7 + 38x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-7' to each side of the equation. 7 + 38x + -7 + x2 = 0 + -7 Reorder the terms: 7 + -7 + 38x + x2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 38x + x2 = 0 + -7 38x + x2 = 0 + -7 Combine like terms: 0 + -7 = -7 38x + x2 = -7 The x term is 38x. Take half its coefficient (19). Square it (361) and add it to both sides. Add '361' to each side of the equation. 38x + 361 + x2 = -7 + 361 Reorder the terms: 361 + 38x + x2 = -7 + 361 Combine like terms: -7 + 361 = 354 361 + 38x + x2 = 354 Factor a perfect square on the left side: (x + 19)(x + 19) = 354 Calculate the square root of the right side: 18.814887722 Break this problem into two subproblems by setting (x + 19) equal to 18.814887722 and -18.814887722.Subproblem 1
x + 19 = 18.814887722 Simplifying x + 19 = 18.814887722 Reorder the terms: 19 + x = 18.814887722 Solving 19 + x = 18.814887722 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + x = 18.814887722 + -19 Combine like terms: 19 + -19 = 0 0 + x = 18.814887722 + -19 x = 18.814887722 + -19 Combine like terms: 18.814887722 + -19 = -0.185112278 x = -0.185112278 Simplifying x = -0.185112278Subproblem 2
x + 19 = -18.814887722 Simplifying x + 19 = -18.814887722 Reorder the terms: 19 + x = -18.814887722 Solving 19 + x = -18.814887722 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + x = -18.814887722 + -19 Combine like terms: 19 + -19 = 0 0 + x = -18.814887722 + -19 x = -18.814887722 + -19 Combine like terms: -18.814887722 + -19 = -37.814887722 x = -37.814887722 Simplifying x = -37.814887722Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.185112278, -37.814887722}
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