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Simplifying 12x4 + -27x2 + -9x3 = 0 Reorder the terms: -27x2 + -9x3 + 12x4 = 0 Solving -27x2 + -9x3 + 12x4 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '3x2'. 3x2(-9 + -3x + 4x2) = 0 Ignore the factor 3.Subproblem 1
Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}Subproblem 2
Set the factor '(-9 + -3x + 4x2)' equal to zero and attempt to solve: Simplifying -9 + -3x + 4x2 = 0 Solving -9 + -3x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -2.25 + -0.75x + x2 = 0 Move the constant term to the right: Add '2.25' to each side of the equation. -2.25 + -0.75x + 2.25 + x2 = 0 + 2.25 Reorder the terms: -2.25 + 2.25 + -0.75x + x2 = 0 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + -0.75x + x2 = 0 + 2.25 -0.75x + x2 = 0 + 2.25 Combine like terms: 0 + 2.25 = 2.25 -0.75x + x2 = 2.25 The x term is -0.75x. Take half its coefficient (-0.375). Square it (0.140625) and add it to both sides. Add '0.140625' to each side of the equation. -0.75x + 0.140625 + x2 = 2.25 + 0.140625 Reorder the terms: 0.140625 + -0.75x + x2 = 2.25 + 0.140625 Combine like terms: 2.25 + 0.140625 = 2.390625 0.140625 + -0.75x + x2 = 2.390625 Factor a perfect square on the left side: (x + -0.375)(x + -0.375) = 2.390625 Calculate the square root of the right side: 1.54616461 Break this problem into two subproblems by setting (x + -0.375) equal to 1.54616461 and -1.54616461.Subproblem 1
x + -0.375 = 1.54616461 Simplifying x + -0.375 = 1.54616461 Reorder the terms: -0.375 + x = 1.54616461 Solving -0.375 + x = 1.54616461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = 1.54616461 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 1.54616461 + 0.375 x = 1.54616461 + 0.375 Combine like terms: 1.54616461 + 0.375 = 1.92116461 x = 1.92116461 Simplifying x = 1.92116461Subproblem 2
x + -0.375 = -1.54616461 Simplifying x + -0.375 = -1.54616461 Reorder the terms: -0.375 + x = -1.54616461 Solving -0.375 + x = -1.54616461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = -1.54616461 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -1.54616461 + 0.375 x = -1.54616461 + 0.375 Combine like terms: -1.54616461 + 0.375 = -1.17116461 x = -1.17116461 Simplifying x = -1.17116461Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.92116461, -1.17116461}Solution
x = {0, 1.92116461, -1.17116461}
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