Algebra Examples

$A_{n} = n (n - 1) (n - 2)$

Step 1

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

$A_{1} = (1) ((1) - 1) ((1) - 2)$

Step 2

Multiply $(1) - 1$ by $1$ .

$A_{1} = ((1) - 1) ((1) - 2)$

Step 3

Subtract $1$ from $1$ .

$A_{1} = 0 ((1) - 2)$

Step 4

Subtract $2$ from $1$ .

$A_{1} = 0 \cdot - 1$

Step 5

Multiply $0$ by $- 1$ .

$A_{1} = 0$