Precalculus Examples

$\sum_{n = 1}^{5} 2 - 3 n$

Step 1

Expand the series for each value of $n$ .

$2 - 3 \cdot 1 + 2 - 3 \cdot 2 + 2 - 3 \cdot 3 + \dots + 2 - 3 \cdot 5$

Step 2

Simplify the expanded form.

$- 35$