f(x)=2.5+3.8x-0.9x^2

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Solution for f(x)=2.5+3.8x-0.9x^2 equation: 


Simplifying
f(x) = 2.5 + 3.8x + -0.9x2

Multiply f * x
fx = 2.5 + 3.8x + -0.9x2

Solving
fx = 2.5 + 3.8x + -0.9x2

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 2.5x-1 + 3.8 + -0.9x

Simplifying
f = 2.5x-1 + 3.8 + -0.9x

Reorder the terms:
f = 3.8 + 2.5x-1 + -0.9x

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