f(9)=-y^2+7y-8

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Solution for f(9)=-y^2+7y-8 equation: 


Simplifying
f(9) = -1y2 + 7y + -8

Reorder the terms for easier multiplication:
9f = -1y2 + 7y + -8

Reorder the terms:
9f = -8 + 7y + -1y2

Solving
9f = -8 + 7y + -1y2

Solving for variable 'f'.

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

Divide each side by '9'.
f = -0.8888888889 + 0.7777777778y + -0.1111111111y2

Simplifying
f = -0.8888888889 + 0.7777777778y + -0.1111111111y2

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