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Simplifying 0 = x2 + 25x + -266 Reorder the terms: 0 = -266 + 25x + x2 Solving 0 = -266 + 25x + x2 Solving for variable 'x'. Combine like terms: 0 + 266 = 266 266 + -25x + -1x2 = -266 + 25x + x2 + 266 + -25x + -1x2 Reorder the terms: 266 + -25x + -1x2 = -266 + 266 + 25x + -25x + x2 + -1x2 Combine like terms: -266 + 266 = 0 266 + -25x + -1x2 = 0 + 25x + -25x + x2 + -1x2 266 + -25x + -1x2 = 25x + -25x + x2 + -1x2 Combine like terms: 25x + -25x = 0 266 + -25x + -1x2 = 0 + x2 + -1x2 266 + -25x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 266 + -25x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -266 + 25x + x2 = 0 Move the constant term to the right: Add '266' to each side of the equation. -266 + 25x + 266 + x2 = 0 + 266 Reorder the terms: -266 + 266 + 25x + x2 = 0 + 266 Combine like terms: -266 + 266 = 0 0 + 25x + x2 = 0 + 266 25x + x2 = 0 + 266 Combine like terms: 0 + 266 = 266 25x + x2 = 266 The x term is 25x. Take half its coefficient (12.5). Square it (156.25) and add it to both sides. Add '156.25' to each side of the equation. 25x + 156.25 + x2 = 266 + 156.25 Reorder the terms: 156.25 + 25x + x2 = 266 + 156.25 Combine like terms: 266 + 156.25 = 422.25 156.25 + 25x + x2 = 422.25 Factor a perfect square on the left side: (x + 12.5)(x + 12.5) = 422.25 Calculate the square root of the right side: 20.548722588 Break this problem into two subproblems by setting (x + 12.5) equal to 20.548722588 and -20.548722588.Subproblem 1
x + 12.5 = 20.548722588 Simplifying x + 12.5 = 20.548722588 Reorder the terms: 12.5 + x = 20.548722588 Solving 12.5 + x = 20.548722588 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = 20.548722588 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = 20.548722588 + -12.5 x = 20.548722588 + -12.5 Combine like terms: 20.548722588 + -12.5 = 8.048722588 x = 8.048722588 Simplifying x = 8.048722588Subproblem 2
x + 12.5 = -20.548722588 Simplifying x + 12.5 = -20.548722588 Reorder the terms: 12.5 + x = -20.548722588 Solving 12.5 + x = -20.548722588 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = -20.548722588 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = -20.548722588 + -12.5 x = -20.548722588 + -12.5 Combine like terms: -20.548722588 + -12.5 = -33.048722588 x = -33.048722588 Simplifying x = -33.048722588Solution
The solution to the problem is based on the solutions from the subproblems. x = {8.048722588, -33.048722588}
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