f(x)=3x+x^2+3(4x)+17

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Solution for f(x)=3x+x^2+3(4x)+17 equation: 


Simplifying
f(x) = 3x + x2 + 3(4x) + 17

Multiply f * x
fx = 3x + x2 + 3(4x) + 17

Remove parenthesis around (4x)
fx = 3x + x2 + 3 * 4x + 17

Multiply 3 * 4
fx = 3x + x2 + 12x + 17

Reorder the terms:
fx = 17 + 3x + 12x + x2

Combine like terms: 3x + 12x = 15x
fx = 17 + 15x + x2

Solving
fx = 17 + 15x + x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 17x-1 + 15 + x

Simplifying
f = 17x-1 + 15 + x

Reorder the terms:
f = 15 + 17x-1 + x

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