f(x)=tan^2x-4tanx+1

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Solution for f(x)=tan^2x-4tanx+1 equation: 


Simplifying
f(x) = tan2x + -4tanx + 1

Multiply f * x
fx = tan2x + -4tanx + 1

Reorder the terms:
fx = 1 + -4antx + an2tx

Solving
fx = 1 + -4antx + an2tx

Solving for variable 'f'.

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

Divide each side by 'x'.
f = x-1 + -4ant + an2t

Simplifying
f = x-1 + -4ant + an2t

Reorder the terms:
f = -4ant + an2t + x-1

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