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Simplifying 3x2 + -20x = 4x + -7x + -6 Reorder the terms: -20x + 3x2 = 4x + -7x + -6 Reorder the terms: -20x + 3x2 = -6 + 4x + -7x Combine like terms: 4x + -7x = -3x -20x + 3x2 = -6 + -3x Solving -20x + 3x2 = -6 + -3x Solving for variable 'x'. Reorder the terms: 6 + -20x + 3x + 3x2 = -6 + -3x + 6 + 3x Combine like terms: -20x + 3x = -17x 6 + -17x + 3x2 = -6 + -3x + 6 + 3x Reorder the terms: 6 + -17x + 3x2 = -6 + 6 + -3x + 3x Combine like terms: -6 + 6 = 0 6 + -17x + 3x2 = 0 + -3x + 3x 6 + -17x + 3x2 = -3x + 3x Combine like terms: -3x + 3x = 0 6 + -17x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 2 + -5.666666667x + x2 = 0 Move the constant term to the right: Add '-2' to each side of the equation. 2 + -5.666666667x + -2 + x2 = 0 + -2 Reorder the terms: 2 + -2 + -5.666666667x + x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5.666666667x + x2 = 0 + -2 -5.666666667x + x2 = 0 + -2 Combine like terms: 0 + -2 = -2 -5.666666667x + x2 = -2 The x term is -5.666666667x. Take half its coefficient (-2.833333334). Square it (8.027777782) and add it to both sides. Add '8.027777782' to each side of the equation. -5.666666667x + 8.027777782 + x2 = -2 + 8.027777782 Reorder the terms: 8.027777782 + -5.666666667x + x2 = -2 + 8.027777782 Combine like terms: -2 + 8.027777782 = 6.027777782 8.027777782 + -5.666666667x + x2 = 6.027777782 Factor a perfect square on the left side: (x + -2.833333334)(x + -2.833333334) = 6.027777782 Calculate the square root of the right side: 2.455153311 Break this problem into two subproblems by setting (x + -2.833333334) equal to 2.455153311 and -2.455153311.Subproblem 1
x + -2.833333334 = 2.455153311 Simplifying x + -2.833333334 = 2.455153311 Reorder the terms: -2.833333334 + x = 2.455153311 Solving -2.833333334 + x = 2.455153311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.833333334' to each side of the equation. -2.833333334 + 2.833333334 + x = 2.455153311 + 2.833333334 Combine like terms: -2.833333334 + 2.833333334 = 0.000000000 0.000000000 + x = 2.455153311 + 2.833333334 x = 2.455153311 + 2.833333334 Combine like terms: 2.455153311 + 2.833333334 = 5.288486645 x = 5.288486645 Simplifying x = 5.288486645Subproblem 2
x + -2.833333334 = -2.455153311 Simplifying x + -2.833333334 = -2.455153311 Reorder the terms: -2.833333334 + x = -2.455153311 Solving -2.833333334 + x = -2.455153311 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.833333334' to each side of the equation. -2.833333334 + 2.833333334 + x = -2.455153311 + 2.833333334 Combine like terms: -2.833333334 + 2.833333334 = 0.000000000 0.000000000 + x = -2.455153311 + 2.833333334 x = -2.455153311 + 2.833333334 Combine like terms: -2.455153311 + 2.833333334 = 0.378180023 x = 0.378180023 Simplifying x = 0.378180023Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.288486645, 0.378180023}
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