f(x)=5x^4+7x^2

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Solution for f(x)=5x^4+7x^2 equation: 


Simplifying
f(x) = 5x4 + 7x2

Multiply f * x
fx = 5x4 + 7x2

Reorder the terms:
fx = 7x2 + 5x4

Solving
fx = 7x2 + 5x4

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by 'x'.
f = 7x + 5x3

Simplifying
f = 7x + 5x3

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