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Simplifying (x + 1.5)(x + 1.5) + 13 = 141 Reorder the terms: (1.5 + x)(x + 1.5) + 13 = 141 Reorder the terms: (1.5 + x)(1.5 + x) + 13 = 141 Multiply (1.5 + x) * (1.5 + x) (1.5(1.5 + x) + x(1.5 + x)) + 13 = 141 ((1.5 * 1.5 + x * 1.5) + x(1.5 + x)) + 13 = 141 ((2.25 + 1.5x) + x(1.5 + x)) + 13 = 141 (2.25 + 1.5x + (1.5 * x + x * x)) + 13 = 141 (2.25 + 1.5x + (1.5x + x2)) + 13 = 141 Combine like terms: 1.5x + 1.5x = 3x (2.25 + 3x + x2) + 13 = 141 Reorder the terms: 2.25 + 13 + 3x + x2 = 141 Combine like terms: 2.25 + 13 = 15.25 15.25 + 3x + x2 = 141 Solving 15.25 + 3x + x2 = 141 Solving for variable 'x'. Reorder the terms: 15.25 + -141 + 3x + x2 = 141 + -141 Combine like terms: 15.25 + -141 = -125.75 -125.75 + 3x + x2 = 141 + -141 Combine like terms: 141 + -141 = 0 -125.75 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '125.75' to each side of the equation. -125.75 + 3x + 125.75 + x2 = 0 + 125.75 Reorder the terms: -125.75 + 125.75 + 3x + x2 = 0 + 125.75 Combine like terms: -125.75 + 125.75 = 0.00 0.00 + 3x + x2 = 0 + 125.75 3x + x2 = 0 + 125.75 Combine like terms: 0 + 125.75 = 125.75 3x + x2 = 125.75 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = 125.75 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 125.75 + 2.25 Combine like terms: 125.75 + 2.25 = 128 2.25 + 3x + x2 = 128 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 128 Calculate the square root of the right side: 11.313708499 Break this problem into two subproblems by setting (x + 1.5) equal to 11.313708499 and -11.313708499.Subproblem 1
x + 1.5 = 11.313708499 Simplifying x + 1.5 = 11.313708499 Reorder the terms: 1.5 + x = 11.313708499 Solving 1.5 + x = 11.313708499 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 11.313708499 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 11.313708499 + -1.5 x = 11.313708499 + -1.5 Combine like terms: 11.313708499 + -1.5 = 9.813708499 x = 9.813708499 Simplifying x = 9.813708499Subproblem 2
x + 1.5 = -11.313708499 Simplifying x + 1.5 = -11.313708499 Reorder the terms: 1.5 + x = -11.313708499 Solving 1.5 + x = -11.313708499 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -11.313708499 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -11.313708499 + -1.5 x = -11.313708499 + -1.5 Combine like terms: -11.313708499 + -1.5 = -12.813708499 x = -12.813708499 Simplifying x = -12.813708499Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.813708499, -12.813708499}
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