WEBVTT

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Here is the problem: sum of 3 to the power k from k equals 1 to 6.

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Add the terms 3 ^ k for k equals 1, 2, …, 6 (6 terms).

3
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Write the sum.

4
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List the first terms.

5
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Add all 6 terms exactly (as fractions).

6
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So the answer is 1092.

7
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Each term is computed exactly and added. For long arithmetic or geometric sums a closed formula gives the same result.

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Decimal value: 1092.