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10 cards from this deck
Sequence where second difference is constant
Subtract each term from the next term
Subtract consecutive first differences
Check if second differences are constant
Tn=an2+bn+cT_n = an^2 + bn + cTn=an2+bn+c
Second difference = 2a2a2a
Parabolic curve
Value of the nth term
Use first three terms, set up simultaneous equations
Position number (1st term, 2nd term, etc.)
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