-x^3-3ax^2-7a^2x-21a^3=0

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Solution for -x^3-3ax^2-7a^2x-21a^3=0 equation: 


Simplifying
-1x3 + -3ax2 + -7a2x + -21a3 = 0

Reorder the terms:
-3ax2 + -7a2x + -21a3 + -1x3 = 0

Solving
-3ax2 + -7a2x + -21a3 + -1x3 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '-1'.
-1(3ax2 + 7a2x + 21a3 + x3) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(3ax2 + 7a2x + 21a3 + x3)' equal to zero and attempt to solve:

Simplifying
3ax2 + 7a2x + 21a3 + x3 = 0

Solving
3ax2 + 7a2x + 21a3 + 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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