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Simplifying (3x + -2)(x + 2) = 18x + 4 Reorder the terms: (-2 + 3x)(x + 2) = 18x + 4 Reorder the terms: (-2 + 3x)(2 + x) = 18x + 4 Multiply (-2 + 3x) * (2 + x) (-2(2 + x) + 3x * (2 + x)) = 18x + 4 ((2 * -2 + x * -2) + 3x * (2 + x)) = 18x + 4 ((-4 + -2x) + 3x * (2 + x)) = 18x + 4 (-4 + -2x + (2 * 3x + x * 3x)) = 18x + 4 (-4 + -2x + (6x + 3x2)) = 18x + 4 Combine like terms: -2x + 6x = 4x (-4 + 4x + 3x2) = 18x + 4 Reorder the terms: -4 + 4x + 3x2 = 4 + 18x Solving -4 + 4x + 3x2 = 4 + 18x Solving for variable 'x'. Reorder the terms: -4 + -4 + 4x + -18x + 3x2 = 4 + 18x + -4 + -18x Combine like terms: -4 + -4 = -8 -8 + 4x + -18x + 3x2 = 4 + 18x + -4 + -18x Combine like terms: 4x + -18x = -14x -8 + -14x + 3x2 = 4 + 18x + -4 + -18x Reorder the terms: -8 + -14x + 3x2 = 4 + -4 + 18x + -18x Combine like terms: 4 + -4 = 0 -8 + -14x + 3x2 = 0 + 18x + -18x -8 + -14x + 3x2 = 18x + -18x Combine like terms: 18x + -18x = 0 -8 + -14x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -2.666666667 + -4.666666667x + x2 = 0 Move the constant term to the right: Add '2.666666667' to each side of the equation. -2.666666667 + -4.666666667x + 2.666666667 + x2 = 0 + 2.666666667 Reorder the terms: -2.666666667 + 2.666666667 + -4.666666667x + x2 = 0 + 2.666666667 Combine like terms: -2.666666667 + 2.666666667 = 0.000000000 0.000000000 + -4.666666667x + x2 = 0 + 2.666666667 -4.666666667x + x2 = 0 + 2.666666667 Combine like terms: 0 + 2.666666667 = 2.666666667 -4.666666667x + x2 = 2.666666667 The x term is -4.666666667x. Take half its coefficient (-2.333333334). Square it (5.444444448) and add it to both sides. Add '5.444444448' to each side of the equation. -4.666666667x + 5.444444448 + x2 = 2.666666667 + 5.444444448 Reorder the terms: 5.444444448 + -4.666666667x + x2 = 2.666666667 + 5.444444448 Combine like terms: 2.666666667 + 5.444444448 = 8.111111115 5.444444448 + -4.666666667x + x2 = 8.111111115 Factor a perfect square on the left side: (x + -2.333333334)(x + -2.333333334) = 8.111111115 Calculate the square root of the right side: 2.848001249 Break this problem into two subproblems by setting (x + -2.333333334) equal to 2.848001249 and -2.848001249.Subproblem 1
x + -2.333333334 = 2.848001249 Simplifying x + -2.333333334 = 2.848001249 Reorder the terms: -2.333333334 + x = 2.848001249 Solving -2.333333334 + x = 2.848001249 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.333333334' to each side of the equation. -2.333333334 + 2.333333334 + x = 2.848001249 + 2.333333334 Combine like terms: -2.333333334 + 2.333333334 = 0.000000000 0.000000000 + x = 2.848001249 + 2.333333334 x = 2.848001249 + 2.333333334 Combine like terms: 2.848001249 + 2.333333334 = 5.181334583 x = 5.181334583 Simplifying x = 5.181334583Subproblem 2
x + -2.333333334 = -2.848001249 Simplifying x + -2.333333334 = -2.848001249 Reorder the terms: -2.333333334 + x = -2.848001249 Solving -2.333333334 + x = -2.848001249 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.333333334' to each side of the equation. -2.333333334 + 2.333333334 + x = -2.848001249 + 2.333333334 Combine like terms: -2.333333334 + 2.333333334 = 0.000000000 0.000000000 + x = -2.848001249 + 2.333333334 x = -2.848001249 + 2.333333334 Combine like terms: -2.848001249 + 2.333333334 = -0.514667915 x = -0.514667915 Simplifying x = -0.514667915Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.181334583, -0.514667915}
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