Precalculus Examples

$\sum_{g = 6}^{8} 5 g$

Step 1

Expand the series for each value of $g$ .

$5 \cdot 6 + 5 \cdot 7 + 5 \cdot 8$

Step 2

Simplify.

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Step 2.1

Multiply $5$ by $6$ .

$30 + 5 \cdot 7 + 5 \cdot 8$

Step 2.2

Multiply $5$ by $7$ .

$30 + 35 + 5 \cdot 8$

Step 2.3

Add $30$ and $35$ .

$65 + 5 \cdot 8$

Step 2.4

Multiply $5$ by $8$ .

$65 + 40$

Step 2.5

Add $65$ and $40$ .

$105$

$105$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$