f(5x)=3x^2+6

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Solution for f(5x)=3x^2+6 equation: 


Simplifying
f(5x) = 3x2 + 6

Remove parenthesis around (5x)
f * 5x = 3x2 + 6

Reorder the terms for easier multiplication:
5f * x = 3x2 + 6

Multiply f * x
5fx = 3x2 + 6

Reorder the terms:
5fx = 6 + 3x2

Solving
5fx = 6 + 3x2

Solving for variable 'f'.

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

Divide each side by '5x'.
f = 1.2x-1 + 0.6x

Simplifying
f = 1.2x-1 + 0.6x

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