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

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


Simplifying
f(-1x) = x2 + -3x + 9

Remove parenthesis around (-1x)
f * -1x = x2 + -3x + 9

Reorder the terms for easier multiplication:
-1f * x = x2 + -3x + 9

Multiply f * x
-1fx = x2 + -3x + 9

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

Solving
-1fx = 9 + -3x + x2

Solving for variable 'f'.

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

Divide each side by '-1x'.
f = -9x-1 + 3 + -1x

Simplifying
f = -9x-1 + 3 + -1x

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

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