This video includes sample exercises and step-by-step explanations of binomial expansions and the sum of a geometric series for the California Standards Test.

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8,17,26,35,44... The first 5 terms in a sequence are shown above. Each term after the first is found by adding nine to the term immediately preceding it. Which term in this sequence is equal to 8+(26-1)9? A. The 8th B. The 9th C. The 25th D. The 26th E. The 27th I am a freshman in high school. I can understand things pretty well, but please be patient with me.