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Simplifying x4 + 15x2 + 6 = 0 Reorder the terms: 6 + 15x2 + x4 = 0 Solving 6 + 15x2 + x4 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-6' to each side of the equation. 6 + 15x2 + -6 + x4 = 0 + -6 Reorder the terms: 6 + -6 + 15x2 + x4 = 0 + -6 Combine like terms: 6 + -6 = 0 0 + 15x2 + x4 = 0 + -6 15x2 + x4 = 0 + -6 Combine like terms: 0 + -6 = -6 15x2 + x4 = -6 The x term is 15x2. Take half its coefficient (7.5). Square it (56.25) and add it to both sides. Add '56.25' to each side of the equation. 15x2 + 56.25 + x4 = -6 + 56.25 Reorder the terms: 56.25 + 15x2 + x4 = -6 + 56.25 Combine like terms: -6 + 56.25 = 50.25 56.25 + 15x2 + x4 = 50.25 Factor a perfect square on the left side: (x2 + 7.5)(x2 + 7.5) = 50.25 Calculate the square root of the right side: 7.088723439 Break this problem into two subproblems by setting (x2 + 7.5) equal to 7.088723439 and -7.088723439.Subproblem 1
x2 + 7.5 = 7.088723439 Simplifying x2 + 7.5 = 7.088723439 Reorder the terms: 7.5 + x2 = 7.088723439 Solving 7.5 + x2 = 7.088723439 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + x2 = 7.088723439 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + x2 = 7.088723439 + -7.5 x2 = 7.088723439 + -7.5 Combine like terms: 7.088723439 + -7.5 = -0.411276561 x2 = -0.411276561 Simplifying x2 = -0.411276561 Reorder the terms: 0.411276561 + x2 = -0.411276561 + 0.411276561 Combine like terms: -0.411276561 + 0.411276561 = 0.000000000 0.411276561 + 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 + 7.5 = -7.088723439 Simplifying x2 + 7.5 = -7.088723439 Reorder the terms: 7.5 + x2 = -7.088723439 Solving 7.5 + x2 = -7.088723439 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + x2 = -7.088723439 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + x2 = -7.088723439 + -7.5 x2 = -7.088723439 + -7.5 Combine like terms: -7.088723439 + -7.5 = -14.588723439 x2 = -14.588723439 Simplifying x2 = -14.588723439 Reorder the terms: 14.588723439 + x2 = -14.588723439 + 14.588723439 Combine like terms: -14.588723439 + 14.588723439 = 0.000000000 14.588723439 + 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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