x^4-12x^2+2=0

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Solution for x^4-12x^2+2=0 equation:


Simplifying
x4 + -12x2 + 2 = 0

Reorder the terms:
2 + -12x2 + x4 = 0

Solving
2 + -12x2 + x4 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -12x2 + -2 + x4 = 0 + -2

Reorder the terms:
2 + -2 + -12x2 + x4 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -12x2 + x4 = 0 + -2
-12x2 + x4 = 0 + -2

Combine like terms: 0 + -2 = -2
-12x2 + x4 = -2

The x term is -12x2.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x2 + 36 + x4 = -2 + 36

Reorder the terms:
36 + -12x2 + x4 = -2 + 36

Combine like terms: -2 + 36 = 34
36 + -12x2 + x4 = 34

Factor a perfect square on the left side:
(x2 + -6)(x2 + -6) = 34

Calculate the square root of the right side: 5.830951895

Break this problem into two subproblems by setting 
(x2 + -6) equal to 5.830951895 and -5.830951895.

Subproblem 1

x2 + -6 = 5.830951895 Simplifying x2 + -6 = 5.830951895 Reorder the terms: -6 + x2 = 5.830951895 Solving -6 + x2 = 5.830951895 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x2 = 5.830951895 + 6 Combine like terms: -6 + 6 = 0 0 + x2 = 5.830951895 + 6 x2 = 5.830951895 + 6 Combine like terms: 5.830951895 + 6 = 11.830951895 x2 = 11.830951895 Simplifying x2 = 11.830951895 Take the square root of each side: x = {-3.439615079, 3.439615079}

Subproblem 2

x2 + -6 = -5.830951895 Simplifying x2 + -6 = -5.830951895 Reorder the terms: -6 + x2 = -5.830951895 Solving -6 + x2 = -5.830951895 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x2 = -5.830951895 + 6 Combine like terms: -6 + 6 = 0 0 + x2 = -5.830951895 + 6 x2 = -5.830951895 + 6 Combine like terms: -5.830951895 + 6 = 0.169048105 x2 = 0.169048105 Simplifying x2 = 0.169048105 Take the square root of each side: x = {-0.4111546, 0.4111546}

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.439615079, 3.439615079, -0.4111546, 0.4111546}

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