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Simplifying 252 = (x + 1)(2x + 1) Reorder the terms: 252 = (1 + x)(2x + 1) Reorder the terms: 252 = (1 + x)(1 + 2x) Multiply (1 + x) * (1 + 2x) 252 = (1(1 + 2x) + x(1 + 2x)) 252 = ((1 * 1 + 2x * 1) + x(1 + 2x)) 252 = ((1 + 2x) + x(1 + 2x)) 252 = (1 + 2x + (1 * x + 2x * x)) 252 = (1 + 2x + (1x + 2x2)) Combine like terms: 2x + 1x = 3x 252 = (1 + 3x + 2x2) Solving 252 = 1 + 3x + 2x2 Solving for variable 'x'. Combine like terms: 252 + -1 = 251 251 + -3x + -2x2 = 1 + 3x + 2x2 + -1 + -3x + -2x2 Reorder the terms: 251 + -3x + -2x2 = 1 + -1 + 3x + -3x + 2x2 + -2x2 Combine like terms: 1 + -1 = 0 251 + -3x + -2x2 = 0 + 3x + -3x + 2x2 + -2x2 251 + -3x + -2x2 = 3x + -3x + 2x2 + -2x2 Combine like terms: 3x + -3x = 0 251 + -3x + -2x2 = 0 + 2x2 + -2x2 251 + -3x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 251 + -3x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -125.5 + 1.5x + x2 = 0 Move the constant term to the right: Add '125.5' to each side of the equation. -125.5 + 1.5x + 125.5 + x2 = 0 + 125.5 Reorder the terms: -125.5 + 125.5 + 1.5x + x2 = 0 + 125.5 Combine like terms: -125.5 + 125.5 = 0.0 0.0 + 1.5x + x2 = 0 + 125.5 1.5x + x2 = 0 + 125.5 Combine like terms: 0 + 125.5 = 125.5 1.5x + x2 = 125.5 The x term is 1.5x. Take half its coefficient (0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. 1.5x + 0.5625 + x2 = 125.5 + 0.5625 Reorder the terms: 0.5625 + 1.5x + x2 = 125.5 + 0.5625 Combine like terms: 125.5 + 0.5625 = 126.0625 0.5625 + 1.5x + x2 = 126.0625 Factor a perfect square on the left side: (x + 0.75)(x + 0.75) = 126.0625 Calculate the square root of the right side: 11.227755786 Break this problem into two subproblems by setting (x + 0.75) equal to 11.227755786 and -11.227755786.Subproblem 1
x + 0.75 = 11.227755786 Simplifying x + 0.75 = 11.227755786 Reorder the terms: 0.75 + x = 11.227755786 Solving 0.75 + x = 11.227755786 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 11.227755786 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 11.227755786 + -0.75 x = 11.227755786 + -0.75 Combine like terms: 11.227755786 + -0.75 = 10.477755786 x = 10.477755786 Simplifying x = 10.477755786Subproblem 2
x + 0.75 = -11.227755786 Simplifying x + 0.75 = -11.227755786 Reorder the terms: 0.75 + x = -11.227755786 Solving 0.75 + x = -11.227755786 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -11.227755786 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -11.227755786 + -0.75 x = -11.227755786 + -0.75 Combine like terms: -11.227755786 + -0.75 = -11.977755786 x = -11.977755786 Simplifying x = -11.977755786Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.477755786, -11.977755786}
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