x^4+2x^3=21-14x-4x^2

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Solution for x^4+2x^3=21-14x-4x^2 equation:


Simplifying
x4 + 2x3 = 21 + -14x + -4x2

Reorder the terms:
2x3 + x4 = 21 + -14x + -4x2

Solving
2x3 + x4 = 21 + -14x + -4x2

Solving for variable 'x'.

Reorder the terms:
-21 + 14x + 4x2 + 2x3 + x4 = 21 + -14x + -4x2 + -21 + 14x + 4x2

Reorder the terms:
-21 + 14x + 4x2 + 2x3 + x4 = 21 + -21 + -14x + 14x + -4x2 + 4x2

Combine like terms: 21 + -21 = 0
-21 + 14x + 4x2 + 2x3 + x4 = 0 + -14x + 14x + -4x2 + 4x2
-21 + 14x + 4x2 + 2x3 + x4 = -14x + 14x + -4x2 + 4x2

Combine like terms: -14x + 14x = 0
-21 + 14x + 4x2 + 2x3 + x4 = 0 + -4x2 + 4x2
-21 + 14x + 4x2 + 2x3 + x4 = -4x2 + 4x2

Combine like terms: -4x2 + 4x2 = 0
-21 + 14x + 4x2 + 2x3 + x4 = 0

The solution to this equation could not be determined.

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