f(x)=x^4-15x^3+81x^2-189x+150

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Solution for f(x)=x^4-15x^3+81x^2-189x+150 equation: 


Simplifying
f(x) = x4 + -15x3 + 81x2 + -189x + 150

Multiply f * x
fx = x4 + -15x3 + 81x2 + -189x + 150

Reorder the terms:
fx = 150 + -189x + 81x2 + -15x3 + x4

Solving
fx = 150 + -189x + 81x2 + -15x3 + 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 = 150x-1 + -189 + 81x + -15x2 + x3

Simplifying
f = 150x-1 + -189 + 81x + -15x2 + x3

Reorder the terms:
f = -189 + 150x-1 + 81x + -15x2 + x3

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