f(3)=5x+x^2

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Solution for f(3)=5x+x^2 equation: 


Simplifying
f(3) = 5x + x2

Reorder the terms for easier multiplication:
3f = 5x + x2

Solving
3f = 5x + x2

Solving for variable 'f'.

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

Divide each side by '3'.
f = 1.666666667x + 0.3333333333x2

Simplifying
f = 1.666666667x + 0.3333333333x2

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