Verified Answer :

caylus

Hello,

f(x)=2x^3-x^2-4x+9=(((0+2)x-1)x-4)x+9

f(3)=(((0+2)3-1)3-4)3+9=((23-1)3-4)-3+9=(53-4)3+9=113+9=33+9=42

or

f(3)=23^3-3^2-43+9=2*27-9-12+9=54-12=42

scardonians

Answer:

Apex: 42

Step-by-step explanation:

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