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Simplifying (x + -3)(x + 6) = 9 Reorder the terms: (-3 + x)(x + 6) = 9 Reorder the terms: (-3 + x)(6 + x) = 9 Multiply (-3 + x) * (6 + x) (-3(6 + x) + x(6 + x)) = 9 ((6 * -3 + x * -3) + x(6 + x)) = 9 ((-18 + -3x) + x(6 + x)) = 9 (-18 + -3x + (6 * x + x * x)) = 9 (-18 + -3x + (6x + x2)) = 9 Combine like terms: -3x + 6x = 3x (-18 + 3x + x2) = 9 Solving -18 + 3x + x2 = 9 Solving for variable 'x'. Reorder the terms: -18 + -9 + 3x + x2 = 9 + -9 Combine like terms: -18 + -9 = -27 -27 + 3x + x2 = 9 + -9 Combine like terms: 9 + -9 = 0 -27 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '27' to each side of the equation. -27 + 3x + 27 + x2 = 0 + 27 Reorder the terms: -27 + 27 + 3x + x2 = 0 + 27 Combine like terms: -27 + 27 = 0 0 + 3x + x2 = 0 + 27 3x + x2 = 0 + 27 Combine like terms: 0 + 27 = 27 3x + x2 = 27 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 = 27 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 27 + 2.25 Combine like terms: 27 + 2.25 = 29.25 2.25 + 3x + x2 = 29.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 29.25 Calculate the square root of the right side: 5.408326913 Break this problem into two subproblems by setting (x + 1.5) equal to 5.408326913 and -5.408326913.Subproblem 1
x + 1.5 = 5.408326913 Simplifying x + 1.5 = 5.408326913 Reorder the terms: 1.5 + x = 5.408326913 Solving 1.5 + x = 5.408326913 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 = 5.408326913 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 5.408326913 + -1.5 x = 5.408326913 + -1.5 Combine like terms: 5.408326913 + -1.5 = 3.908326913 x = 3.908326913 Simplifying x = 3.908326913Subproblem 2
x + 1.5 = -5.408326913 Simplifying x + 1.5 = -5.408326913 Reorder the terms: 1.5 + x = -5.408326913 Solving 1.5 + x = -5.408326913 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 = -5.408326913 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -5.408326913 + -1.5 x = -5.408326913 + -1.5 Combine like terms: -5.408326913 + -1.5 = -6.908326913 x = -6.908326913 Simplifying x = -6.908326913Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.908326913, -6.908326913}
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