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Simplifying x2 + 12x + -210 = 0 Reorder the terms: -210 + 12x + x2 = 0 Solving -210 + 12x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '210' to each side of the equation. -210 + 12x + 210 + x2 = 0 + 210 Reorder the terms: -210 + 210 + 12x + x2 = 0 + 210 Combine like terms: -210 + 210 = 0 0 + 12x + x2 = 0 + 210 12x + x2 = 0 + 210 Combine like terms: 0 + 210 = 210 12x + x2 = 210 The x term is 12x. Take half its coefficient (6). Square it (36) and add it to both sides. Add '36' to each side of the equation. 12x + 36 + x2 = 210 + 36 Reorder the terms: 36 + 12x + x2 = 210 + 36 Combine like terms: 210 + 36 = 246 36 + 12x + x2 = 246 Factor a perfect square on the left side: (x + 6)(x + 6) = 246 Calculate the square root of the right side: 15.684387141 Break this problem into two subproblems by setting (x + 6) equal to 15.684387141 and -15.684387141.Subproblem 1
x + 6 = 15.684387141 Simplifying x + 6 = 15.684387141 Reorder the terms: 6 + x = 15.684387141 Solving 6 + x = 15.684387141 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 15.684387141 + -6 Combine like terms: 6 + -6 = 0 0 + x = 15.684387141 + -6 x = 15.684387141 + -6 Combine like terms: 15.684387141 + -6 = 9.684387141 x = 9.684387141 Simplifying x = 9.684387141Subproblem 2
x + 6 = -15.684387141 Simplifying x + 6 = -15.684387141 Reorder the terms: 6 + x = -15.684387141 Solving 6 + x = -15.684387141 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -15.684387141 + -6 Combine like terms: 6 + -6 = 0 0 + x = -15.684387141 + -6 x = -15.684387141 + -6 Combine like terms: -15.684387141 + -6 = -21.684387141 x = -21.684387141 Simplifying x = -21.684387141Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.684387141, -21.684387141}
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