Algebra Examples

$a_{n} = n (5 n + 5)$

Step 1

Substitute in the value of $n$ to find the $n$ th term.

$a_{2} = (2) (5 (2) + 5)$

Step 2

Multiply $5$ by $2$ .

$a_{2} = 2 (10 + 5)$

Step 3

Add $10$ and $5$ .

$a_{2} = 2 \cdot 15$

Step 4

Multiply $2$ by $15$ .

$a_{2} = 30$