2x^4-58x^2+108=0

Solution for 2x^4-58x^2+108=0 equation:

Simplifying
2x4 + -58x2 + 108 = 0

Reorder the terms:
108 + -58x2 + 2x4 = 0

Solving
108 + -58x2 + 2x4 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(54 + -29x2 + x4) = 0

Factor a trinomial.
2((2 + -1x2)(27 + -1x2)) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(2 + -1x2)' equal to zero and attempt to solve:

Simplifying
2 + -1x2 = 0

Solving
2 + -1x2 = 0

Move all terms containing x to the left, all other terms to the right.

Add '-2' to each side of the equation.
2 + -2 + -1x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1x2 = 0 + -2
-1x2 = 0 + -2

Combine like terms: 0 + -2 = -2
-1x2 = -2

Divide each side by '-1'.
x2 = 2

Simplifying
x2 = 2

Take the square root of each side:
x = {-1.414213562, 1.414213562}
Subproblem 2
Set the factor '(27 + -1x2)' equal to zero and attempt to solve:

Simplifying
27 + -1x2 = 0

Solving
27 + -1x2 = 0

Move all terms containing x to the left, all other terms to the right.

Add '-27' to each side of the equation.
27 + -27 + -1x2 = 0 + -27

Combine like terms: 27 + -27 = 0
0 + -1x2 = 0 + -27
-1x2 = 0 + -27

Combine like terms: 0 + -27 = -27
-1x2 = -27

Divide each side by '-1'.
x2 = 27

Simplifying
x2 = 27

Take the square root of each side:
x = {-5.196152423, 5.196152423}
Solution
x = {-1.414213562, 1.414213562, -5.196152423, 5.196152423}