27x^6+2x^3-5=0

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Solution for 27x^6+2x^3-5=0 equation:


Simplifying
27x6 + 2x3 + -5 = 0

Reorder the terms:
-5 + 2x3 + 27x6 = 0

Solving
-5 + 2x3 + 27x6 = 0

Solving for variable 'x'.

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

Divide each side by '27'.
-0.1851851852 + 0.07407407407x3 + x6 = 0

Move the constant term to the right:

Add '0.1851851852' to each side of the equation.
-0.1851851852 + 0.07407407407x3 + 0.1851851852 + x6 = 0 + 0.1851851852

Reorder the terms:
-0.1851851852 + 0.1851851852 + 0.07407407407x3 + x6 = 0 + 0.1851851852

Combine like terms: -0.1851851852 + 0.1851851852 = 0.0000000000
0.0000000000 + 0.07407407407x3 + x6 = 0 + 0.1851851852
0.07407407407x3 + x6 = 0 + 0.1851851852

Combine like terms: 0 + 0.1851851852 = 0.1851851852
0.07407407407x3 + x6 = 0.1851851852

The x term is 0.07407407407x3.  Take half its coefficient (0.03703703704).
Square it (0.001371742113) and add it to both sides.

Add '0.001371742113' to each side of the equation.
0.07407407407x3 + 0.001371742113 + x6 = 0.1851851852 + 0.001371742113

Reorder the terms:
0.001371742113 + 0.07407407407x3 + x6 = 0.1851851852 + 0.001371742113

Combine like terms: 0.1851851852 + 0.001371742113 = 0.186556927313
0.001371742113 + 0.07407407407x3 + x6 = 0.186556927313

Factor a perfect square on the left side:
(x3 + 0.03703703704)(x3 + 0.03703703704) = 0.186556927313

Calculate the square root of the right side: 0.431922363

Break this problem into two subproblems by setting 
(x3 + 0.03703703704) equal to 0.431922363 and -0.431922363.

Subproblem 1

x3 + 0.03703703704 = 0.431922363 Simplifying x3 + 0.03703703704 = 0.431922363 Reorder the terms: 0.03703703704 + x3 = 0.431922363 Solving 0.03703703704 + x3 = 0.431922363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03703703704' to each side of the equation. 0.03703703704 + -0.03703703704 + x3 = 0.431922363 + -0.03703703704 Combine like terms: 0.03703703704 + -0.03703703704 = 0.00000000000 0.00000000000 + x3 = 0.431922363 + -0.03703703704 x3 = 0.431922363 + -0.03703703704 Combine like terms: 0.431922363 + -0.03703703704 = 0.39488532596 x3 = 0.39488532596 Simplifying x3 = 0.39488532596 Reorder the terms: -0.39488532596 + x3 = 0.39488532596 + -0.39488532596 Combine like terms: 0.39488532596 + -0.39488532596 = 0.00000000000 -0.39488532596 + x3 = 0.00000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined.

Subproblem 2

x3 + 0.03703703704 = -0.431922363 Simplifying x3 + 0.03703703704 = -0.431922363 Reorder the terms: 0.03703703704 + x3 = -0.431922363 Solving 0.03703703704 + x3 = -0.431922363 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03703703704' to each side of the equation. 0.03703703704 + -0.03703703704 + x3 = -0.431922363 + -0.03703703704 Combine like terms: 0.03703703704 + -0.03703703704 = 0.00000000000 0.00000000000 + x3 = -0.431922363 + -0.03703703704 x3 = -0.431922363 + -0.03703703704 Combine like terms: -0.431922363 + -0.03703703704 = -0.46895940004 x3 = -0.46895940004 Simplifying x3 = -0.46895940004 Reorder the terms: 0.46895940004 + x3 = -0.46895940004 + 0.46895940004 Combine like terms: -0.46895940004 + 0.46895940004 = 0.00000000000 0.46895940004 + x3 = 0.00000000000 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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