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Simplifying x4 + 8x2 + -11 = 0 Reorder the terms: -11 + 8x2 + x4 = 0 Solving -11 + 8x2 + x4 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '11' to each side of the equation. -11 + 8x2 + 11 + x4 = 0 + 11 Reorder the terms: -11 + 11 + 8x2 + x4 = 0 + 11 Combine like terms: -11 + 11 = 0 0 + 8x2 + x4 = 0 + 11 8x2 + x4 = 0 + 11 Combine like terms: 0 + 11 = 11 8x2 + x4 = 11 The x term is 8x2. Take half its coefficient (4). Square it (16) and add it to both sides. Add '16' to each side of the equation. 8x2 + 16 + x4 = 11 + 16 Reorder the terms: 16 + 8x2 + x4 = 11 + 16 Combine like terms: 11 + 16 = 27 16 + 8x2 + x4 = 27 Factor a perfect square on the left side: (x2 + 4)(x2 + 4) = 27 Calculate the square root of the right side: 5.196152423 Break this problem into two subproblems by setting (x2 + 4) equal to 5.196152423 and -5.196152423.Subproblem 1
x2 + 4 = 5.196152423 Simplifying x2 + 4 = 5.196152423 Reorder the terms: 4 + x2 = 5.196152423 Solving 4 + x2 = 5.196152423 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x2 = 5.196152423 + -4 Combine like terms: 4 + -4 = 0 0 + x2 = 5.196152423 + -4 x2 = 5.196152423 + -4 Combine like terms: 5.196152423 + -4 = 1.196152423 x2 = 1.196152423 Simplifying x2 = 1.196152423 Take the square root of each side: x = {-1.093687534, 1.093687534}Subproblem 2
x2 + 4 = -5.196152423 Simplifying x2 + 4 = -5.196152423 Reorder the terms: 4 + x2 = -5.196152423 Solving 4 + x2 = -5.196152423 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x2 = -5.196152423 + -4 Combine like terms: 4 + -4 = 0 0 + x2 = -5.196152423 + -4 x2 = -5.196152423 + -4 Combine like terms: -5.196152423 + -4 = -9.196152423 x2 = -9.196152423 Simplifying x2 = -9.196152423 Reorder the terms: 9.196152423 + x2 = -9.196152423 + 9.196152423 Combine like terms: -9.196152423 + 9.196152423 = 0.000000000 9.196152423 + 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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