6x^4-18x^2+6=0

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Solution for 6x^4-18x^2+6=0 equation:


Simplifying
6x4 + -18x2 + 6 = 0

Reorder the terms:
6 + -18x2 + 6x4 = 0

Solving
6 + -18x2 + 6x4 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '6'.
6(1 + -3x2 + x4) = 0

Ignore the factor 6.

Subproblem 1

Set the factor '(1 + -3x2 + x4)' equal to zero and attempt to solve: Simplifying 1 + -3x2 + x4 = 0 Solving 1 + -3x2 + x4 = 0 Begin completing the square. Move the constant term to the right: Add '-1' to each side of the equation. 1 + -3x2 + -1 + x4 = 0 + -1 Reorder the terms: 1 + -1 + -3x2 + x4 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x2 + x4 = 0 + -1 -3x2 + x4 = 0 + -1 Combine like terms: 0 + -1 = -1 -3x2 + x4 = -1 The x term is -3x2. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x2 + 2.25 + x4 = -1 + 2.25 Reorder the terms: 2.25 + -3x2 + x4 = -1 + 2.25 Combine like terms: -1 + 2.25 = 1.25 2.25 + -3x2 + x4 = 1.25 Factor a perfect square on the left side: (x2 + -1.5)(x2 + -1.5) = 1.25 Calculate the square root of the right side: 1.118033989 Break this problem into two subproblems by setting (x2 + -1.5) equal to 1.118033989 and -1.118033989.

Subproblem 1

x2 + -1.5 = 1.118033989 Simplifying x2 + -1.5 = 1.118033989 Reorder the terms: -1.5 + x2 = 1.118033989 Solving -1.5 + x2 = 1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x2 = 1.118033989 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x2 = 1.118033989 + 1.5 x2 = 1.118033989 + 1.5 Combine like terms: 1.118033989 + 1.5 = 2.618033989 x2 = 2.618033989 Simplifying x2 = 2.618033989 Take the square root of each side: x = {-1.618033989, 1.618033989}

Subproblem 2

x2 + -1.5 = -1.118033989 Simplifying x2 + -1.5 = -1.118033989 Reorder the terms: -1.5 + x2 = -1.118033989 Solving -1.5 + x2 = -1.118033989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x2 = -1.118033989 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x2 = -1.118033989 + 1.5 x2 = -1.118033989 + 1.5 Combine like terms: -1.118033989 + 1.5 = 0.381966011 x2 = 0.381966011 Simplifying x2 = 0.381966011 Take the square root of each side: x = {-0.618033989, 0.618033989}

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.618033989, 1.618033989, -0.618033989, 0.618033989}

Solution

x = {-1.618033989, 1.618033989, -0.618033989, 0.618033989}

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