Find the first six terms of the sequence.a1 = 7, a2 = 5; for n ? 3, an = an-1 - an-2
A. 7, 5, 2, -5, -1, 4
B. 7, 5, 3, 1, -1, -3
C. 7, 5, 12, 17, 26, 43
D. 7, 5, -2, -7, -5, 2
Answer: D
Mathematics
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