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Simplifying x4 + 4x2 + 1 = 0 Reorder the terms: 1 + 4x2 + x4 = 0 Solving 1 + 4x2 + x4 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + 4x2 + -1 + x4 = 0 + -1 Reorder the terms: 1 + -1 + 4x2 + x4 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 4x2 + x4 = 0 + -1 4x2 + x4 = 0 + -1 Combine like terms: 0 + -1 = -1 4x2 + x4 = -1 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 = -1 + 4 Reorder the terms: 4 + 4x2 + x4 = -1 + 4 Combine like terms: -1 + 4 = 3 4 + 4x2 + x4 = 3 Factor a perfect square on the left side: (x2 + 2)(x2 + 2) = 3 Calculate the square root of the right side: 1.732050808 Break this problem into two subproblems by setting (x2 + 2) equal to 1.732050808 and -1.732050808.Subproblem 1
x2 + 2 = 1.732050808 Simplifying x2 + 2 = 1.732050808 Reorder the terms: 2 + x2 = 1.732050808 Solving 2 + x2 = 1.732050808 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 = 1.732050808 + -2 Combine like terms: 2 + -2 = 0 0 + x2 = 1.732050808 + -2 x2 = 1.732050808 + -2 Combine like terms: 1.732050808 + -2 = -0.267949192 x2 = -0.267949192 Simplifying x2 = -0.267949192 Reorder the terms: 0.267949192 + x2 = -0.267949192 + 0.267949192 Combine like terms: -0.267949192 + 0.267949192 = 0.000000000 0.267949192 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined.Subproblem 2
x2 + 2 = -1.732050808 Simplifying x2 + 2 = -1.732050808 Reorder the terms: 2 + x2 = -1.732050808 Solving 2 + x2 = -1.732050808 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 = -1.732050808 + -2 Combine like terms: 2 + -2 = 0 0 + x2 = -1.732050808 + -2 x2 = -1.732050808 + -2 Combine like terms: -1.732050808 + -2 = -3.732050808 x2 = -3.732050808 Simplifying x2 = -3.732050808 Reorder the terms: 3.732050808 + x2 = -3.732050808 + 3.732050808 Combine like terms: -3.732050808 + 3.732050808 = 0.000000000 3.732050808 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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