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Simplifying 15x + (-6x + 5) + -2 + -1(-1x + 13) = -1(7x + 23) + -1x(3 + -2x) Reorder the terms: 15x + (5 + -6x) + -2 + -1(-1x + 13) = -1(7x + 23) + -1x(3 + -2x) Remove parenthesis around (5 + -6x) 15x + 5 + -6x + -2 + -1(-1x + 13) = -1(7x + 23) + -1x(3 + -2x) Reorder the terms: 15x + 5 + -6x + -2 + -1(13 + -1x) = -1(7x + 23) + -1x(3 + -2x) 15x + 5 + -6x + -2 + (13 * -1 + -1x * -1) = -1(7x + 23) + -1x(3 + -2x) 15x + 5 + -6x + -2 + (-13 + 1x) = -1(7x + 23) + -1x(3 + -2x) Reorder the terms: 5 + -2 + -13 + 15x + -6x + 1x = -1(7x + 23) + -1x(3 + -2x) Combine like terms: 5 + -2 = 3 3 + -13 + 15x + -6x + 1x = -1(7x + 23) + -1x(3 + -2x) Combine like terms: 3 + -13 = -10 -10 + 15x + -6x + 1x = -1(7x + 23) + -1x(3 + -2x) Combine like terms: 15x + -6x = 9x -10 + 9x + 1x = -1(7x + 23) + -1x(3 + -2x) Combine like terms: 9x + 1x = 10x -10 + 10x = -1(7x + 23) + -1x(3 + -2x) Reorder the terms: -10 + 10x = -1(23 + 7x) + -1x(3 + -2x) -10 + 10x = (23 * -1 + 7x * -1) + -1x(3 + -2x) -10 + 10x = (-23 + -7x) + -1x(3 + -2x) -10 + 10x = -23 + -7x + (3 * -1x + -2x * -1x) -10 + 10x = -23 + -7x + (-3x + 2x2) Combine like terms: -7x + -3x = -10x -10 + 10x = -23 + -10x + 2x2 Solving -10 + 10x = -23 + -10x + 2x2 Solving for variable 'x'. Reorder the terms: -10 + 23 + 10x + 10x + -2x2 = -23 + -10x + 2x2 + 23 + 10x + -2x2 Combine like terms: -10 + 23 = 13 13 + 10x + 10x + -2x2 = -23 + -10x + 2x2 + 23 + 10x + -2x2 Combine like terms: 10x + 10x = 20x 13 + 20x + -2x2 = -23 + -10x + 2x2 + 23 + 10x + -2x2 Reorder the terms: 13 + 20x + -2x2 = -23 + 23 + -10x + 10x + 2x2 + -2x2 Combine like terms: -23 + 23 = 0 13 + 20x + -2x2 = 0 + -10x + 10x + 2x2 + -2x2 13 + 20x + -2x2 = -10x + 10x + 2x2 + -2x2 Combine like terms: -10x + 10x = 0 13 + 20x + -2x2 = 0 + 2x2 + -2x2 13 + 20x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 13 + 20x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -6.5 + -10x + x2 = 0 Move the constant term to the right: Add '6.5' to each side of the equation. -6.5 + -10x + 6.5 + x2 = 0 + 6.5 Reorder the terms: -6.5 + 6.5 + -10x + x2 = 0 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + -10x + x2 = 0 + 6.5 -10x + x2 = 0 + 6.5 Combine like terms: 0 + 6.5 = 6.5 -10x + x2 = 6.5 The x term is -10x. Take half its coefficient (-5). Square it (25) and add it to both sides. Add '25' to each side of the equation. -10x + 25 + x2 = 6.5 + 25 Reorder the terms: 25 + -10x + x2 = 6.5 + 25 Combine like terms: 6.5 + 25 = 31.5 25 + -10x + x2 = 31.5 Factor a perfect square on the left side: (x + -5)(x + -5) = 31.5 Calculate the square root of the right side: 5.61248608 Break this problem into two subproblems by setting (x + -5) equal to 5.61248608 and -5.61248608.Subproblem 1
x + -5 = 5.61248608 Simplifying x + -5 = 5.61248608 Reorder the terms: -5 + x = 5.61248608 Solving -5 + x = 5.61248608 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 5.61248608 + 5 Combine like terms: -5 + 5 = 0 0 + x = 5.61248608 + 5 x = 5.61248608 + 5 Combine like terms: 5.61248608 + 5 = 10.61248608 x = 10.61248608 Simplifying x = 10.61248608Subproblem 2
x + -5 = -5.61248608 Simplifying x + -5 = -5.61248608 Reorder the terms: -5 + x = -5.61248608 Solving -5 + x = -5.61248608 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -5.61248608 + 5 Combine like terms: -5 + 5 = 0 0 + x = -5.61248608 + 5 x = -5.61248608 + 5 Combine like terms: -5.61248608 + 5 = -0.61248608 x = -0.61248608 Simplifying x = -0.61248608Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.61248608, -0.61248608}
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