hi!

ive got three difference equations but could do with some help becuase i didnt think that they would be too long but they are my homework for this week and am slightly confused why i would get such a short homework!

a) Xn+2 - 5Xn+1 + 6Xn =0

b) Xn+2 - 5Xn+1 + 6Xn = 4

c) Xn+2 - 6Xn+1 + 9Xn =0

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