f(x)=x^4-4x^2+9

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Solution for f(x)=x^4-4x^2+9 equation: 


Simplifying
f(x) = x4 + -4x2 + 9

Multiply f * x
fx = x4 + -4x2 + 9

Reorder the terms:
fx = 9 + -4x2 + x4

Solving
fx = 9 + -4x2 + x4

Solving for variable 'f'.

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

Divide each side by 'x'.
f = 9x-1 + -4x + x3

Simplifying
f = 9x-1 + -4x + x3

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