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

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


Simplifying
2 + 2x2 + -1x4 = 0

Solving
2 + 2x2 + -1x4 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-2 + -2x2 + x4 = 0

Move the constant term to the right:

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

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

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

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

The x term is -2x2.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x2 + 1 + x4 = 2 + 1

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

Combine like terms: 2 + 1 = 3
1 + -2x2 + x4 = 3

Factor a perfect square on the left side:
(x2 + -1)(x2 + -1) = 3

Calculate the square root of the right side: 1.732050808

Break this problem into two subproblems by setting 
(x2 + -1) equal to 1.732050808 and -1.732050808.

Subproblem 1

x2 + -1 = 1.732050808 Simplifying x2 + -1 = 1.732050808 Reorder the terms: -1 + x2 = 1.732050808 Solving -1 + x2 = 1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x2 = 1.732050808 + 1 Combine like terms: -1 + 1 = 0 0 + x2 = 1.732050808 + 1 x2 = 1.732050808 + 1 Combine like terms: 1.732050808 + 1 = 2.732050808 x2 = 2.732050808 Simplifying x2 = 2.732050808 Take the square root of each side: x = {-1.65289165, 1.65289165}

Subproblem 2

x2 + -1 = -1.732050808 Simplifying x2 + -1 = -1.732050808 Reorder the terms: -1 + x2 = -1.732050808 Solving -1 + x2 = -1.732050808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x2 = -1.732050808 + 1 Combine like terms: -1 + 1 = 0 0 + x2 = -1.732050808 + 1 x2 = -1.732050808 + 1 Combine like terms: -1.732050808 + 1 = -0.732050808 x2 = -0.732050808 Simplifying x2 = -0.732050808 Reorder the terms: 0.732050808 + x2 = -0.732050808 + 0.732050808 Combine like terms: -0.732050808 + 0.732050808 = 0.000000000 0.732050808 + 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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