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

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


Simplifying
0 = x4 + -3x2 + -3

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

Solving
0 = -3 + -3x2 + x4

Solving for variable 'x'.

Combine like terms: 0 + 3 = 3
3 + 3x2 + -1x4 = -3 + -3x2 + x4 + 3 + 3x2 + -1x4

Reorder the terms:
3 + 3x2 + -1x4 = -3 + 3 + -3x2 + 3x2 + x4 + -1x4

Combine like terms: -3 + 3 = 0
3 + 3x2 + -1x4 = 0 + -3x2 + 3x2 + x4 + -1x4
3 + 3x2 + -1x4 = -3x2 + 3x2 + x4 + -1x4

Combine like terms: -3x2 + 3x2 = 0
3 + 3x2 + -1x4 = 0 + x4 + -1x4
3 + 3x2 + -1x4 = x4 + -1x4

Combine like terms: x4 + -1x4 = 0
3 + 3x2 + -1x4 = 0

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

Divide each side by '-1'.
-3 + -3x2 + x4 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -3x2 + 3 + x4 = 0 + 3

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

Combine like terms: -3 + 3 = 0
0 + -3x2 + x4 = 0 + 3
-3x2 + x4 = 0 + 3

Combine like terms: 0 + 3 = 3
-3x2 + x4 = 3

The x term is -3x2.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x2 + 2.25 + x4 = 3 + 2.25

Reorder the terms:
2.25 + -3x2 + x4 = 3 + 2.25

Combine like terms: 3 + 2.25 = 5.25
2.25 + -3x2 + x4 = 5.25

Factor a perfect square on the left side:
(x2 + -1.5)(x2 + -1.5) = 5.25

Calculate the square root of the right side: 2.291287847

Break this problem into two subproblems by setting 
(x2 + -1.5) equal to 2.291287847 and -2.291287847.

Subproblem 1

x2 + -1.5 = 2.291287847 Simplifying x2 + -1.5 = 2.291287847 Reorder the terms: -1.5 + x2 = 2.291287847 Solving -1.5 + x2 = 2.291287847 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x2 = 2.291287847 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x2 = 2.291287847 + 1.5 x2 = 2.291287847 + 1.5 Combine like terms: 2.291287847 + 1.5 = 3.791287847 x2 = 3.791287847 Simplifying x2 = 3.791287847 Take the square root of each side: x = {-1.947122967, 1.947122967}

Subproblem 2

x2 + -1.5 = -2.291287847 Simplifying x2 + -1.5 = -2.291287847 Reorder the terms: -1.5 + x2 = -2.291287847 Solving -1.5 + x2 = -2.291287847 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x2 = -2.291287847 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x2 = -2.291287847 + 1.5 x2 = -2.291287847 + 1.5 Combine like terms: -2.291287847 + 1.5 = -0.791287847 x2 = -0.791287847 Simplifying x2 = -0.791287847 Reorder the terms: 0.791287847 + x2 = -0.791287847 + 0.791287847 Combine like terms: -0.791287847 + 0.791287847 = 0.000000000 0.791287847 + 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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