Answer:
I think..... f(x) = x-5x+6
f(2)= 2-5(2)+6
f(2)= 2-10+6
f(2)= - 2
f(x) = x-5x+6
f(3)= 3-5(3)+6
f(3)=2-15+6
f(3)= -7
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