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Answer:
11
Step-by-step explanation:
f(x) =g(x).(x^2-9)+3x+2
f(3)=g(x).9-9+11
f(3)=11 (1)
f(-3)=0+(-7)
f(-3)=-7 (2)
let there be another function l(x)
l(x) =f(x) +3x+2
so, l(3) and l(-3) be 0
from this,
l(x) =f(x) +3x+2= A(x-3) (x+3)
from this we can find f(x) and solve the problem.