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Simplifying (x + -3)(x + -3) + -4 = 18 Reorder the terms: (-3 + x)(x + -3) + -4 = 18 Reorder the terms: (-3 + x)(-3 + x) + -4 = 18 Multiply (-3 + x) * (-3 + x) (-3(-3 + x) + x(-3 + x)) + -4 = 18 ((-3 * -3 + x * -3) + x(-3 + x)) + -4 = 18 ((9 + -3x) + x(-3 + x)) + -4 = 18 (9 + -3x + (-3 * x + x * x)) + -4 = 18 (9 + -3x + (-3x + x2)) + -4 = 18 Combine like terms: -3x + -3x = -6x (9 + -6x + x2) + -4 = 18 Reorder the terms: 9 + -4 + -6x + x2 = 18 Combine like terms: 9 + -4 = 5 5 + -6x + x2 = 18 Solving 5 + -6x + x2 = 18 Solving for variable 'x'. Reorder the terms: 5 + -18 + -6x + x2 = 18 + -18 Combine like terms: 5 + -18 = -13 -13 + -6x + x2 = 18 + -18 Combine like terms: 18 + -18 = 0 -13 + -6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '13' to each side of the equation. -13 + -6x + 13 + x2 = 0 + 13 Reorder the terms: -13 + 13 + -6x + x2 = 0 + 13 Combine like terms: -13 + 13 = 0 0 + -6x + x2 = 0 + 13 -6x + x2 = 0 + 13 Combine like terms: 0 + 13 = 13 -6x + x2 = 13 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = 13 + 9 Reorder the terms: 9 + -6x + x2 = 13 + 9 Combine like terms: 13 + 9 = 22 9 + -6x + x2 = 22 Factor a perfect square on the left side: (x + -3)(x + -3) = 22 Calculate the square root of the right side: 4.69041576 Break this problem into two subproblems by setting (x + -3) equal to 4.69041576 and -4.69041576.Subproblem 1
x + -3 = 4.69041576 Simplifying x + -3 = 4.69041576 Reorder the terms: -3 + x = 4.69041576 Solving -3 + x = 4.69041576 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 4.69041576 + 3 Combine like terms: -3 + 3 = 0 0 + x = 4.69041576 + 3 x = 4.69041576 + 3 Combine like terms: 4.69041576 + 3 = 7.69041576 x = 7.69041576 Simplifying x = 7.69041576Subproblem 2
x + -3 = -4.69041576 Simplifying x + -3 = -4.69041576 Reorder the terms: -3 + x = -4.69041576 Solving -3 + x = -4.69041576 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -4.69041576 + 3 Combine like terms: -3 + 3 = 0 0 + x = -4.69041576 + 3 x = -4.69041576 + 3 Combine like terms: -4.69041576 + 3 = -1.69041576 x = -1.69041576 Simplifying x = -1.69041576Solution
The solution to the problem is based on the solutions from the subproblems. x = {7.69041576, -1.69041576}
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