2x=0.4+0.8x^2+0.4x^4

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Solution for 2x=0.4+0.8x^2+0.4x^4 equation: 


Simplifying
2x = 0.4 + 0.8x2 + 0.4x4

Solving
2x = 0.4 + 0.8x2 + 0.4x4

Solving for variable 'x'.

Reorder the terms:
-0.4 + 2x + -0.8x2 + -0.4x4 = 0.4 + 0.8x2 + 0.4x4 + -0.4 + -0.8x2 + -0.4x4

Reorder the terms:
-0.4 + 2x + -0.8x2 + -0.4x4 = 0.4 + -0.4 + 0.8x2 + -0.8x2 + 0.4x4 + -0.4x4

Combine like terms: 0.4 + -0.4 = 0.0
-0.4 + 2x + -0.8x2 + -0.4x4 = 0.0 + 0.8x2 + -0.8x2 + 0.4x4 + -0.4x4
-0.4 + 2x + -0.8x2 + -0.4x4 = 0.8x2 + -0.8x2 + 0.4x4 + -0.4x4

Combine like terms: 0.8x2 + -0.8x2 = 0.0
-0.4 + 2x + -0.8x2 + -0.4x4 = 0.0 + 0.4x4 + -0.4x4
-0.4 + 2x + -0.8x2 + -0.4x4 = 0.4x4 + -0.4x4

Combine like terms: 0.4x4 + -0.4x4 = 0.0
-0.4 + 2x + -0.8x2 + -0.4x4 = 0.0

The solution to this equation could not be determined.

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