Learn to determine the 18th term of a geometric sequence by using the explicit formula

The video tutorial explains how to identify a geometric sequence by determining the common ratio. It demonstrates calculating the common ratio using the first two terms and verifying it with other terms. The tutorial then shows how to use the explicit formula to find the 18th term in the sequence, requiring a calculator for large calculations. The process involves applying the formula a_n = a_1 * r^(n-1) and calculating the result.

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