f(9)=2(9)^2-5(9)-20

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Solution for f(9)=2(9)^2-5(9)-20 equation: 



f(9)=2(9)^2-5(9)-20

We move all terms to the left:

f(9)-(2(9)^2-5(9)-20)=0

We add all the numbers together, and all the variables

f^9-762=0

We do not support efpression: f^9

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