



 
Hi Sveta. You do this problem in two steps: 1. Find a and b. f(x) + 2x + 8 = f(x+1) So this can be separated into the x term and the units term: and so substitute in a=1: Now you have a and b. 2. Find c using f(1) = 12. 12 = f(1) So f(x) = 1x^{2} + 7x + 4 Now you have to check that no mistakes were made. Stephen La Rocque.>  


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