x^4-32x^2-384=0

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Solution for x^4-32x^2-384=0 equation:


Simplifying
x4 + -32x2 + -384 = 0

Reorder the terms:
-384 + -32x2 + x4 = 0

Solving
-384 + -32x2 + x4 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '384' to each side of the equation.
-384 + -32x2 + 384 + x4 = 0 + 384

Reorder the terms:
-384 + 384 + -32x2 + x4 = 0 + 384

Combine like terms: -384 + 384 = 0
0 + -32x2 + x4 = 0 + 384
-32x2 + x4 = 0 + 384

Combine like terms: 0 + 384 = 384
-32x2 + x4 = 384

The x term is -32x2.  Take half its coefficient (-16).
Square it (256) and add it to both sides.

Add '256' to each side of the equation.
-32x2 + 256 + x4 = 384 + 256

Reorder the terms:
256 + -32x2 + x4 = 384 + 256

Combine like terms: 384 + 256 = 640
256 + -32x2 + x4 = 640

Factor a perfect square on the left side:
(x2 + -16)(x2 + -16) = 640

Calculate the square root of the right side: 25.298221281

Break this problem into two subproblems by setting 
(x2 + -16) equal to 25.298221281 and -25.298221281.

Subproblem 1

x2 + -16 = 25.298221281 Simplifying x2 + -16 = 25.298221281 Reorder the terms: -16 + x2 = 25.298221281 Solving -16 + x2 = 25.298221281 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + x2 = 25.298221281 + 16 Combine like terms: -16 + 16 = 0 0 + x2 = 25.298221281 + 16 x2 = 25.298221281 + 16 Combine like terms: 25.298221281 + 16 = 41.298221281 x2 = 41.298221281 Simplifying x2 = 41.298221281 Take the square root of each side: x = {-6.426369214, 6.426369214}

Subproblem 2

x2 + -16 = -25.298221281 Simplifying x2 + -16 = -25.298221281 Reorder the terms: -16 + x2 = -25.298221281 Solving -16 + x2 = -25.298221281 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + x2 = -25.298221281 + 16 Combine like terms: -16 + 16 = 0 0 + x2 = -25.298221281 + 16 x2 = -25.298221281 + 16 Combine like terms: -25.298221281 + 16 = -9.298221281 x2 = -9.298221281 Simplifying x2 = -9.298221281 Reorder the terms: 9.298221281 + x2 = -9.298221281 + 9.298221281 Combine like terms: -9.298221281 + 9.298221281 = 0.000000000 9.298221281 + 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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