f(9)=2.15(2(9)^2-4(9)-6

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Solution for f(9)=2.15(2(9)^2-4(9)-6 equation: 



f(9)=2.15(2(9)^2-4(9)-6

We move all terms to the left:

f(9)-(2.15(2(9)^2-4(9)-6)=0

We add all the numbers together, and all the variables

f^9=0

We do not support efpression: f^9

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