f(x+9)=x^2-3x-8

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Solution for f(x+9)=x^2-3x-8 equation: 


Simplifying
f(x + 9) = x2 + -3x + -8

Reorder the terms:
f(9 + x) = x2 + -3x + -8
(9 * f + x * f) = x2 + -3x + -8
(9f + fx) = x2 + -3x + -8

Reorder the terms:
9f + fx = -8 + -3x + x2

Solving
9f + fx = -8 + -3x + x2

Solving for variable 'f'.

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

Reorder the terms:
8 + 9f + fx + 3x + -1x2 = -8 + -3x + x2 + 8 + 3x + -1x2

Reorder the terms:
8 + 9f + fx + 3x + -1x2 = -8 + 8 + -3x + 3x + x2 + -1x2

Combine like terms: -8 + 8 = 0
8 + 9f + fx + 3x + -1x2 = 0 + -3x + 3x + x2 + -1x2
8 + 9f + fx + 3x + -1x2 = -3x + 3x + x2 + -1x2

Combine like terms: -3x + 3x = 0
8 + 9f + fx + 3x + -1x2 = 0 + x2 + -1x2
8 + 9f + fx + 3x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
8 + 9f + fx + 3x + -1x2 = 0

The solution to this equation could not be determined.

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