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Simplifying x2 + 15x = -9x + -3 Reorder the terms: 15x + x2 = -9x + -3 Reorder the terms: 15x + x2 = -3 + -9x Solving 15x + x2 = -3 + -9x Solving for variable 'x'. Reorder the terms: 3 + 15x + 9x + x2 = -3 + -9x + 3 + 9x Combine like terms: 15x + 9x = 24x 3 + 24x + x2 = -3 + -9x + 3 + 9x Reorder the terms: 3 + 24x + x2 = -3 + 3 + -9x + 9x Combine like terms: -3 + 3 = 0 3 + 24x + x2 = 0 + -9x + 9x 3 + 24x + x2 = -9x + 9x Combine like terms: -9x + 9x = 0 3 + 24x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-3' to each side of the equation. 3 + 24x + -3 + x2 = 0 + -3 Reorder the terms: 3 + -3 + 24x + x2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 24x + x2 = 0 + -3 24x + x2 = 0 + -3 Combine like terms: 0 + -3 = -3 24x + x2 = -3 The x term is 24x. Take half its coefficient (12). Square it (144) and add it to both sides. Add '144' to each side of the equation. 24x + 144 + x2 = -3 + 144 Reorder the terms: 144 + 24x + x2 = -3 + 144 Combine like terms: -3 + 144 = 141 144 + 24x + x2 = 141 Factor a perfect square on the left side: (x + 12)(x + 12) = 141 Calculate the square root of the right side: 11.874342087 Break this problem into two subproblems by setting (x + 12) equal to 11.874342087 and -11.874342087.Subproblem 1
x + 12 = 11.874342087 Simplifying x + 12 = 11.874342087 Reorder the terms: 12 + x = 11.874342087 Solving 12 + x = 11.874342087 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 11.874342087 + -12 Combine like terms: 12 + -12 = 0 0 + x = 11.874342087 + -12 x = 11.874342087 + -12 Combine like terms: 11.874342087 + -12 = -0.125657913 x = -0.125657913 Simplifying x = -0.125657913Subproblem 2
x + 12 = -11.874342087 Simplifying x + 12 = -11.874342087 Reorder the terms: 12 + x = -11.874342087 Solving 12 + x = -11.874342087 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = -11.874342087 + -12 Combine like terms: 12 + -12 = 0 0 + x = -11.874342087 + -12 x = -11.874342087 + -12 Combine like terms: -11.874342087 + -12 = -23.874342087 x = -23.874342087 Simplifying x = -23.874342087Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.125657913, -23.874342087}
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