6.286x^4-6.286x^2+1=0

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Solution for 6.286x^4-6.286x^2+1=0 equation:


Simplifying
6.286x4 + -6.286x2 + 1 = 0

Reorder the terms:
1 + -6.286x2 + 6.286x4 = 0

Solving
1 + -6.286x2 + 6.286x4 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
6.286 the coefficient of the squared term: 

Divide each side by '6.286'.
0.159083678 + -1x2 + x4 = 0

Move the constant term to the right:

Add '-0.159083678' to each side of the equation.
0.159083678 + -1x2 + -0.159083678 + x4 = 0 + -0.159083678

Reorder the terms:
0.159083678 + -0.159083678 + -1x2 + x4 = 0 + -0.159083678

Combine like terms: 0.159083678 + -0.159083678 = 0.000000000
0.000000000 + -1x2 + x4 = 0 + -0.159083678
-1x2 + x4 = 0 + -0.159083678

Combine like terms: 0 + -0.159083678 = -0.159083678
-1x2 + x4 = -0.159083678

The x term is -1x2.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x2 + 0.25 + x4 = -0.159083678 + 0.25

Reorder the terms:
0.25 + -1x2 + x4 = -0.159083678 + 0.25

Combine like terms: -0.159083678 + 0.25 = 0.090916322
0.25 + -1x2 + x4 = 0.090916322

Factor a perfect square on the left side:
(x2 + -0.5)(x2 + -0.5) = 0.090916322

Calculate the square root of the right side: 0.301523336

Break this problem into two subproblems by setting 
(x2 + -0.5) equal to 0.301523336 and -0.301523336.

Subproblem 1

x2 + -0.5 = 0.301523336 Simplifying x2 + -0.5 = 0.301523336 Reorder the terms: -0.5 + x2 = 0.301523336 Solving -0.5 + x2 = 0.301523336 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x2 = 0.301523336 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x2 = 0.301523336 + 0.5 x2 = 0.301523336 + 0.5 Combine like terms: 0.301523336 + 0.5 = 0.801523336 x2 = 0.801523336 Simplifying x2 = 0.801523336 Take the square root of each side: x = {-0.895278357, 0.895278357}

Subproblem 2

x2 + -0.5 = -0.301523336 Simplifying x2 + -0.5 = -0.301523336 Reorder the terms: -0.5 + x2 = -0.301523336 Solving -0.5 + x2 = -0.301523336 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x2 = -0.301523336 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x2 = -0.301523336 + 0.5 x2 = -0.301523336 + 0.5 Combine like terms: -0.301523336 + 0.5 = 0.198476664 x2 = 0.198476664 Simplifying x2 = 0.198476664 Take the square root of each side: x = {-0.445507199, 0.445507199}

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.895278357, 0.895278357, -0.445507199, 0.445507199}

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