7x^3+7x-21=0

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Solution for 7x^3+7x-21=0 equation: 


Simplifying
7x3 + 7x + -21 = 0

Reorder the terms:
-21 + 7x + 7x3 = 0

Solving
-21 + 7x + 7x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-3 + x + x3) = 0

Ignore the factor 7.

Subproblem 1
Set the factor '(-3 + x + x3)' equal to zero and attempt to solve:

Simplifying
-3 + x + x3 = 0

Solving
-3 + x + x3 = 0

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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