Algebra Examples

$2 n^{2}$

Step 1

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

$a_{3} = 2 {(3)}^{2}$

Step 2

Raise $3$ to the power of $2$ .

$a_{3} = 2 \cdot 9$

Step 3

Multiply $2$ by $9$ .

$a_{3} = 18$