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Simplifying x2 + 18x = -59 Reorder the terms: 18x + x2 = -59 Solving 18x + x2 = -59 Solving for variable 'x'. Reorder the terms: 59 + 18x + x2 = -59 + 59 Combine like terms: -59 + 59 = 0 59 + 18x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-59' to each side of the equation. 59 + 18x + -59 + x2 = 0 + -59 Reorder the terms: 59 + -59 + 18x + x2 = 0 + -59 Combine like terms: 59 + -59 = 0 0 + 18x + x2 = 0 + -59 18x + x2 = 0 + -59 Combine like terms: 0 + -59 = -59 18x + x2 = -59 The x term is 18x. Take half its coefficient (9). Square it (81) and add it to both sides. Add '81' to each side of the equation. 18x + 81 + x2 = -59 + 81 Reorder the terms: 81 + 18x + x2 = -59 + 81 Combine like terms: -59 + 81 = 22 81 + 18x + x2 = 22 Factor a perfect square on the left side: (x + 9)(x + 9) = 22 Calculate the square root of the right side: 4.69041576 Break this problem into two subproblems by setting (x + 9) equal to 4.69041576 and -4.69041576.Subproblem 1
x + 9 = 4.69041576 Simplifying x + 9 = 4.69041576 Reorder the terms: 9 + x = 4.69041576 Solving 9 + x = 4.69041576 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = 4.69041576 + -9 Combine like terms: 9 + -9 = 0 0 + x = 4.69041576 + -9 x = 4.69041576 + -9 Combine like terms: 4.69041576 + -9 = -4.30958424 x = -4.30958424 Simplifying x = -4.30958424Subproblem 2
x + 9 = -4.69041576 Simplifying x + 9 = -4.69041576 Reorder the terms: 9 + x = -4.69041576 Solving 9 + x = -4.69041576 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x = -4.69041576 + -9 Combine like terms: 9 + -9 = 0 0 + x = -4.69041576 + -9 x = -4.69041576 + -9 Combine like terms: -4.69041576 + -9 = -13.69041576 x = -13.69041576 Simplifying x = -13.69041576Solution
The solution to the problem is based on the solutions from the subproblems. x = {-4.30958424, -13.69041576}
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