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OpenStudy (anonymous):
f(0)=-4 f(1)=12 f(n)=-3 x f(n-1)-2 x f(n-2) for n>1 A.)-4, 12, -28, 60... b.)-4, -12, -28, -60 C.)-4, 12, -18, 54 D.)-4, 12, -18, -54
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