f(a)=5x^3+3x

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Solution for f(a)=5x^3+3x equation: 


Simplifying
f(a) = 5x3 + 3x

Multiply f * a
af = 5x3 + 3x

Reorder the terms:
af = 3x + 5x3

Solving
af = 3x + 5x3

Solving for variable 'a'.

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

Divide each side by 'f'.
a = 3f-1x + 5f-1x3

Simplifying
a = 3f-1x + 5f-1x3

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