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### Course: Algebra (all content) > Unit 18

Lesson 3: Geometric sequences- Intro to geometric sequences
- Extend geometric sequences
- Use geometric sequence formulas
- Explicit & recursive formulas for geometric sequences
- Explicit formulas for geometric sequences
- Converting recursive & explicit forms of geometric sequences
- Recursive formulas for geometric sequences
- Sequences word problems

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# Converting recursive & explicit forms of geometric sequences

Sal solves the following problem: The explicit formula of a geometric sequence is g(x)=9*8^(x-1). Find the recursive formula of the sequence. Created by Sal Khan.

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