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Simplifying 2x4 + -8x2 + 4 = 0 Reorder the terms: 4 + -8x2 + 2x4 = 0 Solving 4 + -8x2 + 2x4 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(2 + -4x2 + x4) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(2 + -4x2 + x4)' equal to zero and attempt to solve: Simplifying 2 + -4x2 + x4 = 0 Solving 2 + -4x2 + x4 = 0 Begin completing the square. Move the constant term to the right: Add '-2' to each side of the equation. 2 + -4x2 + -2 + x4 = 0 + -2 Reorder the terms: 2 + -2 + -4x2 + x4 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -4x2 + x4 = 0 + -2 -4x2 + x4 = 0 + -2 Combine like terms: 0 + -2 = -2 -4x2 + x4 = -2 The x term is -4x2. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x2 + 4 + x4 = -2 + 4 Reorder the terms: 4 + -4x2 + x4 = -2 + 4 Combine like terms: -2 + 4 = 2 4 + -4x2 + x4 = 2 Factor a perfect square on the left side: (x2 + -2)(x2 + -2) = 2 Calculate the square root of the right side: 1.414213562 Break this problem into two subproblems by setting (x2 + -2) equal to 1.414213562 and -1.414213562.Subproblem 1
x2 + -2 = 1.414213562 Simplifying x2 + -2 = 1.414213562 Reorder the terms: -2 + x2 = 1.414213562 Solving -2 + x2 = 1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x2 = 1.414213562 + 2 Combine like terms: -2 + 2 = 0 0 + x2 = 1.414213562 + 2 x2 = 1.414213562 + 2 Combine like terms: 1.414213562 + 2 = 3.414213562 x2 = 3.414213562 Simplifying x2 = 3.414213562 Take the square root of each side: x = {-1.847759065, 1.847759065}Subproblem 2
x2 + -2 = -1.414213562 Simplifying x2 + -2 = -1.414213562 Reorder the terms: -2 + x2 = -1.414213562 Solving -2 + x2 = -1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x2 = -1.414213562 + 2 Combine like terms: -2 + 2 = 0 0 + x2 = -1.414213562 + 2 x2 = -1.414213562 + 2 Combine like terms: -1.414213562 + 2 = 0.585786438 x2 = 0.585786438 Simplifying x2 = 0.585786438 Take the square root of each side: x = {-0.765366865, 0.765366865}Solution
The solution to the problem is based on the solutions from the subproblems. x = {-1.847759065, 1.847759065, -0.765366865, 0.765366865}Solution
x = {-1.847759065, 1.847759065, -0.765366865, 0.765366865}
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