2x^4-10x^2+3=0

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Solution for 2x^4-10x^2+3=0 equation:


Simplifying
2x4 + -10x2 + 3 = 0

Reorder the terms:
3 + -10x2 + 2x4 = 0

Solving
3 + -10x2 + 2x4 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
1.5 + -5x2 + x4 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -5x2 + -1.5 + x4 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -5x2 + x4 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -5x2 + x4 = 0 + -1.5
-5x2 + x4 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-5x2 + x4 = -1.5

The x term is -5x2.  Take half its coefficient (-2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
-5x2 + 6.25 + x4 = -1.5 + 6.25

Reorder the terms:
6.25 + -5x2 + x4 = -1.5 + 6.25

Combine like terms: -1.5 + 6.25 = 4.75
6.25 + -5x2 + x4 = 4.75

Factor a perfect square on the left side:
(x2 + -2.5)(x2 + -2.5) = 4.75

Calculate the square root of the right side: 2.179449472

Break this problem into two subproblems by setting 
(x2 + -2.5) equal to 2.179449472 and -2.179449472.

Subproblem 1

x2 + -2.5 = 2.179449472 Simplifying x2 + -2.5 = 2.179449472 Reorder the terms: -2.5 + x2 = 2.179449472 Solving -2.5 + x2 = 2.179449472 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x2 = 2.179449472 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x2 = 2.179449472 + 2.5 x2 = 2.179449472 + 2.5 Combine like terms: 2.179449472 + 2.5 = 4.679449472 x2 = 4.679449472 Simplifying x2 = 4.679449472 Take the square root of each side: x = {-2.163203521, 2.163203521}

Subproblem 2

x2 + -2.5 = -2.179449472 Simplifying x2 + -2.5 = -2.179449472 Reorder the terms: -2.5 + x2 = -2.179449472 Solving -2.5 + x2 = -2.179449472 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x2 = -2.179449472 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x2 = -2.179449472 + 2.5 x2 = -2.179449472 + 2.5 Combine like terms: -2.179449472 + 2.5 = 0.320550528 x2 = 0.320550528 Simplifying x2 = 0.320550528 Take the square root of each side: x = {-0.566171818, 0.566171818}

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-2.163203521, 2.163203521, -0.566171818, 0.566171818}

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