2x^3-4x-42=0

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Solution for 2x^3-4x-42=0 equation: 


Simplifying
2x3 + -4x + -42 = 0

Reorder the terms:
-42 + -4x + 2x3 = 0

Solving
-42 + -4x + 2x3 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-21 + -2x + x3) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(-21 + -2x + x3)' equal to zero and attempt to solve:

Simplifying
-21 + -2x + x3 = 0

Solving
-21 + -2x + 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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