y^6-3y^3-2=0

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Solution for y^6-3y^3-2=0 equation:


Simplifying
y6 + -3y3 + -2 = 0

Reorder the terms:
-2 + -3y3 + y6 = 0

Solving
-2 + -3y3 + y6 = 0

Solving for variable 'y'.

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -3y3 + 2 + y6 = 0 + 2

Reorder the terms:
-2 + 2 + -3y3 + y6 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -3y3 + y6 = 0 + 2
-3y3 + y6 = 0 + 2

Combine like terms: 0 + 2 = 2
-3y3 + y6 = 2

The y term is -3y3.  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.
-3y3 + 2.25 + y6 = 2 + 2.25

Reorder the terms:
2.25 + -3y3 + y6 = 2 + 2.25

Combine like terms: 2 + 2.25 = 4.25
2.25 + -3y3 + y6 = 4.25

Factor a perfect square on the left side:
(y3 + -1.5)(y3 + -1.5) = 4.25

Calculate the square root of the right side: 2.061552813

Break this problem into two subproblems by setting 
(y3 + -1.5) equal to 2.061552813 and -2.061552813.

Subproblem 1

y3 + -1.5 = 2.061552813 Simplifying y3 + -1.5 = 2.061552813 Reorder the terms: -1.5 + y3 = 2.061552813 Solving -1.5 + y3 = 2.061552813 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + y3 = 2.061552813 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + y3 = 2.061552813 + 1.5 y3 = 2.061552813 + 1.5 Combine like terms: 2.061552813 + 1.5 = 3.561552813 y3 = 3.561552813 Simplifying y3 = 3.561552813 Reorder the terms: -3.561552813 + y3 = 3.561552813 + -3.561552813 Combine like terms: 3.561552813 + -3.561552813 = 0.000000000 -3.561552813 + y3 = 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

y3 + -1.5 = -2.061552813 Simplifying y3 + -1.5 = -2.061552813 Reorder the terms: -1.5 + y3 = -2.061552813 Solving -1.5 + y3 = -2.061552813 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + y3 = -2.061552813 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + y3 = -2.061552813 + 1.5 y3 = -2.061552813 + 1.5 Combine like terms: -2.061552813 + 1.5 = -0.561552813 y3 = -0.561552813 Simplifying y3 = -0.561552813 Reorder the terms: 0.561552813 + y3 = -0.561552813 + 0.561552813 Combine like terms: -0.561552813 + 0.561552813 = 0.000000000 0.561552813 + y3 = 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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