x^4+4x^2-21=o

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Solution for x^4+4x^2-21=o equation: 


Simplifying
x4 + 4x2 + -21 = o

Reorder the terms:
-21 + 4x2 + x4 = o

Solving
-21 + 4x2 + x4 = o

Solving for variable 'x'.

Reorder the terms:
-21 + -1o + 4x2 + x4 = o + -1o

Combine like terms: o + -1o = 0
-21 + -1o + 4x2 + x4 = 0

The solution to this equation could not be determined.

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