5x^4+20x^3-90x^2+120=0

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Solution for 5x^4+20x^3-90x^2+120=0 equation: 


Simplifying
5x4 + 20x3 + -90x2 + 120 = 0

Reorder the terms:
120 + -90x2 + 20x3 + 5x4 = 0

Solving
120 + -90x2 + 20x3 + 5x4 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '5'.
5(24 + -18x2 + 4x3 + x4) = 0

Ignore the factor 5.

Subproblem 1
Set the factor '(24 + -18x2 + 4x3 + x4)' equal to zero and attempt to solve:

Simplifying
24 + -18x2 + 4x3 + x4 = 0

Solving
24 + -18x2 + 4x3 + x4 = 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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