f(x)=3x(2x)

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


Simplifying
f(x) = 3x(2x)

Multiply f * x
fx = 3x(2x)

Remove parenthesis around (2x)
fx = 3x * 2x

Reorder the terms for easier multiplication:
fx = 3 * 2x * x

Multiply 3 * 2
fx = 6x * x

Multiply x * x
fx = 6x2

Solving
fx = 6x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 6x

Simplifying
f = 6x

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