f(x)=x+x^3+x^2

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Solution for f(x)=x+x^3+x^2 equation: 


Simplifying
f(x) = x + x3 + x2

Multiply f * x
fx = x + x3 + x2

Reorder the terms:
fx = x + x2 + x3

Solving
fx = x + x2 + x3

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 1 + x + x2

Simplifying
f = 1 + x + x2

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