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Simplifying x2 + 8x + -119 = 0 Reorder the terms: -119 + 8x + x2 = 0 Solving -119 + 8x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '119' to each side of the equation. -119 + 8x + 119 + x2 = 0 + 119 Reorder the terms: -119 + 119 + 8x + x2 = 0 + 119 Combine like terms: -119 + 119 = 0 0 + 8x + x2 = 0 + 119 8x + x2 = 0 + 119 Combine like terms: 0 + 119 = 119 8x + x2 = 119 The x term is 8x. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8x + 16 + x2 = 119 + 16 Reorder the terms: 16 + 8x + x2 = 119 + 16 Combine like terms: 119 + 16 = 135 16 + 8x + x2 = 135 Factor a perfect square on the left side: (x + 4)(x + 4) = 135 Calculate the square root of the right side: 11.618950039 Break this problem into two subproblems by setting (x + 4) equal to 11.618950039 and -11.618950039.Subproblem 1
x + 4 = 11.618950039 Simplifying x + 4 = 11.618950039 Reorder the terms: 4 + x = 11.618950039 Solving 4 + x = 11.618950039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 11.618950039 + -4 Combine like terms: 4 + -4 = 0 0 + x = 11.618950039 + -4 x = 11.618950039 + -4 Combine like terms: 11.618950039 + -4 = 7.618950039 x = 7.618950039 Simplifying x = 7.618950039Subproblem 2
x + 4 = -11.618950039 Simplifying x + 4 = -11.618950039 Reorder the terms: 4 + x = -11.618950039 Solving 4 + x = -11.618950039 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -11.618950039 + -4 Combine like terms: 4 + -4 = 0 0 + x = -11.618950039 + -4 x = -11.618950039 + -4 Combine like terms: -11.618950039 + -4 = -15.618950039 x = -15.618950039 Simplifying x = -15.618950039Solution
The solution to the problem is based on the solutions from the subproblems. x = {7.618950039, -15.618950039}
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