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Simplifying (2x + -9)(x + -1) + -2 = 0 Reorder the terms: (-9 + 2x)(x + -1) + -2 = 0 Reorder the terms: (-9 + 2x)(-1 + x) + -2 = 0 Multiply (-9 + 2x) * (-1 + x) (-9(-1 + x) + 2x * (-1 + x)) + -2 = 0 ((-1 * -9 + x * -9) + 2x * (-1 + x)) + -2 = 0 ((9 + -9x) + 2x * (-1 + x)) + -2 = 0 (9 + -9x + (-1 * 2x + x * 2x)) + -2 = 0 (9 + -9x + (-2x + 2x2)) + -2 = 0 Combine like terms: -9x + -2x = -11x (9 + -11x + 2x2) + -2 = 0 Reorder the terms: 9 + -2 + -11x + 2x2 = 0 Combine like terms: 9 + -2 = 7 7 + -11x + 2x2 = 0 Solving 7 + -11x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. 3.5 + -5.5x + x2 = 0 Move the constant term to the right: Add '-3.5' to each side of the equation. 3.5 + -5.5x + -3.5 + x2 = 0 + -3.5 Reorder the terms: 3.5 + -3.5 + -5.5x + x2 = 0 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + -5.5x + x2 = 0 + -3.5 -5.5x + x2 = 0 + -3.5 Combine like terms: 0 + -3.5 = -3.5 -5.5x + x2 = -3.5 The x term is -5.5x. Take half its coefficient (-2.75). Square it (7.5625) and add it to both sides. Add '7.5625' to each side of the equation. -5.5x + 7.5625 + x2 = -3.5 + 7.5625 Reorder the terms: 7.5625 + -5.5x + x2 = -3.5 + 7.5625 Combine like terms: -3.5 + 7.5625 = 4.0625 7.5625 + -5.5x + x2 = 4.0625 Factor a perfect square on the left side: (x + -2.75)(x + -2.75) = 4.0625 Calculate the square root of the right side: 2.015564437 Break this problem into two subproblems by setting (x + -2.75) equal to 2.015564437 and -2.015564437.Subproblem 1
x + -2.75 = 2.015564437 Simplifying x + -2.75 = 2.015564437 Reorder the terms: -2.75 + x = 2.015564437 Solving -2.75 + x = 2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = 2.015564437 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = 2.015564437 + 2.75 x = 2.015564437 + 2.75 Combine like terms: 2.015564437 + 2.75 = 4.765564437 x = 4.765564437 Simplifying x = 4.765564437Subproblem 2
x + -2.75 = -2.015564437 Simplifying x + -2.75 = -2.015564437 Reorder the terms: -2.75 + x = -2.015564437 Solving -2.75 + x = -2.015564437 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + x = -2.015564437 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + x = -2.015564437 + 2.75 x = -2.015564437 + 2.75 Combine like terms: -2.015564437 + 2.75 = 0.734435563 x = 0.734435563 Simplifying x = 0.734435563Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.765564437, 0.734435563}
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