x^6+8x^3-6=0

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Solution for x^6+8x^3-6=0 equation:


Simplifying
x6 + 8x3 + -6 = 0

Reorder the terms:
-6 + 8x3 + x6 = 0

Solving
-6 + 8x3 + x6 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 8x3 + 6 + x6 = 0 + 6

Reorder the terms:
-6 + 6 + 8x3 + x6 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 8x3 + x6 = 0 + 6
8x3 + x6 = 0 + 6

Combine like terms: 0 + 6 = 6
8x3 + x6 = 6

The x term is 8x3.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x3 + 16 + x6 = 6 + 16

Reorder the terms:
16 + 8x3 + x6 = 6 + 16

Combine like terms: 6 + 16 = 22
16 + 8x3 + x6 = 22

Factor a perfect square on the left side:
(x3 + 4)(x3 + 4) = 22

Calculate the square root of the right side: 4.69041576

Break this problem into two subproblems by setting 
(x3 + 4) equal to 4.69041576 and -4.69041576.

Subproblem 1

x3 + 4 = 4.69041576 Simplifying x3 + 4 = 4.69041576 Reorder the terms: 4 + x3 = 4.69041576 Solving 4 + x3 = 4.69041576 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x3 = 4.69041576 + -4 Combine like terms: 4 + -4 = 0 0 + x3 = 4.69041576 + -4 x3 = 4.69041576 + -4 Combine like terms: 4.69041576 + -4 = 0.69041576 x3 = 0.69041576 Simplifying x3 = 0.69041576 Reorder the terms: -0.69041576 + x3 = 0.69041576 + -0.69041576 Combine like terms: 0.69041576 + -0.69041576 = 0.00000000 -0.69041576 + x3 = 0.00000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined.

Subproblem 2

x3 + 4 = -4.69041576 Simplifying x3 + 4 = -4.69041576 Reorder the terms: 4 + x3 = -4.69041576 Solving 4 + x3 = -4.69041576 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x3 = -4.69041576 + -4 Combine like terms: 4 + -4 = 0 0 + x3 = -4.69041576 + -4 x3 = -4.69041576 + -4 Combine like terms: -4.69041576 + -4 = -8.69041576 x3 = -8.69041576 Simplifying x3 = -8.69041576 Reorder the terms: 8.69041576 + x3 = -8.69041576 + 8.69041576 Combine like terms: -8.69041576 + 8.69041576 = 0.00000000 8.69041576 + x3 = 0.00000000 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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