1=0.5x^4-2x^2

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Solution for 1=0.5x^4-2x^2 equation:


Simplifying
1 = 0.5x4 + -2x2

Reorder the terms:
1 = -2x2 + 0.5x4

Solving
1 = -2x2 + 0.5x4

Solving for variable 'x'.

Reorder the terms:
1 + 2x2 + -0.5x4 = -2x2 + 2x2 + 0.5x4 + -0.5x4

Combine like terms: -2x2 + 2x2 = 0
1 + 2x2 + -0.5x4 = 0 + 0.5x4 + -0.5x4
1 + 2x2 + -0.5x4 = 0.5x4 + -0.5x4

Combine like terms: 0.5x4 + -0.5x4 = 0.0
1 + 2x2 + -0.5x4 = 0.0

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
-2 + -4x2 + x4 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -4x2 + 2 + x4 = 0 + 2

Reorder the terms:
-2 + 2 + -4x2 + x4 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -4x2 + x4 = 0 + 2
-4x2 + x4 = 0 + 2

Combine like terms: 0 + 2 = 2
-4x2 + x4 = 2

The x term is -4x2.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x2 + 4 + x4 = 2 + 4

Reorder the terms:
4 + -4x2 + x4 = 2 + 4

Combine like terms: 2 + 4 = 6
4 + -4x2 + x4 = 6

Factor a perfect square on the left side:
(x2 + -2)(x2 + -2) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x2 + -2) equal to 2.449489743 and -2.449489743.

Subproblem 1

x2 + -2 = 2.449489743 Simplifying x2 + -2 = 2.449489743 Reorder the terms: -2 + x2 = 2.449489743 Solving -2 + x2 = 2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x2 = 2.449489743 + 2 Combine like terms: -2 + 2 = 0 0 + x2 = 2.449489743 + 2 x2 = 2.449489743 + 2 Combine like terms: 2.449489743 + 2 = 4.449489743 x2 = 4.449489743 Simplifying x2 = 4.449489743 Take the square root of each side: x = {-2.109381365, 2.109381365}

Subproblem 2

x2 + -2 = -2.449489743 Simplifying x2 + -2 = -2.449489743 Reorder the terms: -2 + x2 = -2.449489743 Solving -2 + x2 = -2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x2 = -2.449489743 + 2 Combine like terms: -2 + 2 = 0 0 + x2 = -2.449489743 + 2 x2 = -2.449489743 + 2 Combine like terms: -2.449489743 + 2 = -0.449489743 x2 = -0.449489743 Simplifying x2 = -0.449489743 Reorder the terms: 0.449489743 + x2 = -0.449489743 + 0.449489743 Combine like terms: -0.449489743 + 0.449489743 = 0.000000000 0.449489743 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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