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f(-1/4)=-8(-1/4)+4
We move all terms to the left:
f(-1/4)-(-8(-1/4)+4)=0
We multiply parentheses
-1f^2-(-8(-1/4)+4)=0
We multiply all the terms by the denominator
-1f^2*4)+4)-(-8(-1=0
Wy multiply elements
-4f^3-1=0
We do not support efpression: f^3
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