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1. Find the indicated term of the geometric sequence. 4 11 a6 when al and r = 3. 2.Find an expression for the nth term of the sequence. -6, -1, 4, 9, 14,... 3.Use the binomial theorem to expand the binomial. (x - 4)4 4. Find the indicated term of the binomial expansion. (x + 2y)^11; term containing x^5 30. Find the sum Sn of the first n terms of the sequence. 5, 10, 20, 40, 80, ...; n = 11