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Simplifying x = 2x3 + -4x2 + -12x Reorder the terms: x = -12x + -4x2 + 2x3 Solving x = -12x + -4x2 + 2x3 Solving for variable 'x'. Combine like terms: x + 12x = 13x 13x + 4x2 + -2x3 = -12x + -4x2 + 2x3 + 12x + 4x2 + -2x3 Reorder the terms: 13x + 4x2 + -2x3 = -12x + 12x + -4x2 + 4x2 + 2x3 + -2x3 Combine like terms: -12x + 12x = 0 13x + 4x2 + -2x3 = 0 + -4x2 + 4x2 + 2x3 + -2x3 13x + 4x2 + -2x3 = -4x2 + 4x2 + 2x3 + -2x3 Combine like terms: -4x2 + 4x2 = 0 13x + 4x2 + -2x3 = 0 + 2x3 + -2x3 13x + 4x2 + -2x3 = 2x3 + -2x3 Combine like terms: 2x3 + -2x3 = 0 13x + 4x2 + -2x3 = 0 Factor out the Greatest Common Factor (GCF), 'x'. x(13 + 4x + -2x2) = 0Subproblem 1
Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0Subproblem 2
Set the factor '(13 + 4x + -2x2)' equal to zero and attempt to solve: Simplifying 13 + 4x + -2x2 = 0 Solving 13 + 4x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -6.5 + -2x + x2 = 0 Move the constant term to the right: Add '6.5' to each side of the equation. -6.5 + -2x + 6.5 + x2 = 0 + 6.5 Reorder the terms: -6.5 + 6.5 + -2x + x2 = 0 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + -2x + x2 = 0 + 6.5 -2x + x2 = 0 + 6.5 Combine like terms: 0 + 6.5 = 6.5 -2x + x2 = 6.5 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = 6.5 + 1 Reorder the terms: 1 + -2x + x2 = 6.5 + 1 Combine like terms: 6.5 + 1 = 7.5 1 + -2x + x2 = 7.5 Factor a perfect square on the left side: (x + -1)(x + -1) = 7.5 Calculate the square root of the right side: 2.738612788 Break this problem into two subproblems by setting (x + -1) equal to 2.738612788 and -2.738612788.Subproblem 1
x + -1 = 2.738612788 Simplifying x + -1 = 2.738612788 Reorder the terms: -1 + x = 2.738612788 Solving -1 + x = 2.738612788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 2.738612788 + 1 Combine like terms: -1 + 1 = 0 0 + x = 2.738612788 + 1 x = 2.738612788 + 1 Combine like terms: 2.738612788 + 1 = 3.738612788 x = 3.738612788 Simplifying x = 3.738612788Subproblem 2
x + -1 = -2.738612788 Simplifying x + -1 = -2.738612788 Reorder the terms: -1 + x = -2.738612788 Solving -1 + x = -2.738612788 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -2.738612788 + 1 Combine like terms: -1 + 1 = 0 0 + x = -2.738612788 + 1 x = -2.738612788 + 1 Combine like terms: -2.738612788 + 1 = -1.738612788 x = -1.738612788 Simplifying x = -1.738612788Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.738612788, -1.738612788}Solution
x = {0, 3.738612788, -1.738612788}
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