x^6-7x^3-6=0

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Solution for x^6-7x^3-6=0 equation:


Simplifying
x6 + -7x3 + -6 = 0

Reorder the terms:
-6 + -7x3 + x6 = 0

Solving
-6 + -7x3 + 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 + -7x3 + 6 + x6 = 0 + 6

Reorder the terms:
-6 + 6 + -7x3 + x6 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -7x3 + x6 = 0 + 6
-7x3 + x6 = 0 + 6

Combine like terms: 0 + 6 = 6
-7x3 + x6 = 6

The x term is -7x3.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x3 + 12.25 + x6 = 6 + 12.25

Reorder the terms:
12.25 + -7x3 + x6 = 6 + 12.25

Combine like terms: 6 + 12.25 = 18.25
12.25 + -7x3 + x6 = 18.25

Factor a perfect square on the left side:
(x3 + -3.5)(x3 + -3.5) = 18.25

Calculate the square root of the right side: 4.272001873

Break this problem into two subproblems by setting 
(x3 + -3.5) equal to 4.272001873 and -4.272001873.

Subproblem 1

x3 + -3.5 = 4.272001873 Simplifying x3 + -3.5 = 4.272001873 Reorder the terms: -3.5 + x3 = 4.272001873 Solving -3.5 + x3 = 4.272001873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x3 = 4.272001873 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x3 = 4.272001873 + 3.5 x3 = 4.272001873 + 3.5 Combine like terms: 4.272001873 + 3.5 = 7.772001873 x3 = 7.772001873 Simplifying x3 = 7.772001873 Reorder the terms: -7.772001873 + x3 = 7.772001873 + -7.772001873 Combine like terms: 7.772001873 + -7.772001873 = 0.000000000 -7.772001873 + x3 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined.

Subproblem 2

x3 + -3.5 = -4.272001873 Simplifying x3 + -3.5 = -4.272001873 Reorder the terms: -3.5 + x3 = -4.272001873 Solving -3.5 + x3 = -4.272001873 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x3 = -4.272001873 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x3 = -4.272001873 + 3.5 x3 = -4.272001873 + 3.5 Combine like terms: -4.272001873 + 3.5 = -0.772001873 x3 = -0.772001873 Simplifying x3 = -0.772001873 Reorder the terms: 0.772001873 + x3 = -0.772001873 + 0.772001873 Combine like terms: -0.772001873 + 0.772001873 = 0.000000000 0.772001873 + x3 = 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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