f(x)=-0.01x^4-0.2x^3+0.4x^2+0.8x+3.5

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Solution for f(x)=-0.01x^4-0.2x^3+0.4x^2+0.8x+3.5 equation: 


Simplifying
f(x) = -0.01x4 + -0.2x3 + 0.4x2 + 0.8x + 3.5

Multiply f * x
fx = -0.01x4 + -0.2x3 + 0.4x2 + 0.8x + 3.5

Reorder the terms:
fx = 3.5 + 0.8x + 0.4x2 + -0.2x3 + -0.01x4

Solving
fx = 3.5 + 0.8x + 0.4x2 + -0.2x3 + -0.01x4

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 3.5x-1 + 0.8 + 0.4x + -0.2x2 + -0.01x3

Simplifying
f = 3.5x-1 + 0.8 + 0.4x + -0.2x2 + -0.01x3

Reorder the terms:
f = 0.8 + 3.5x-1 + 0.4x + -0.2x2 + -0.01x3

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