$\"\"$

Binomial theorem:

For any positive integer $\"\"$ the expansion of $\"\"$ is

$\"\"$ ,

where $\"\"$ .

$\"\"$

The binomial is $\"\"$ .

Apply the Binomial Theorem to expand $\"\"$ , where $\"\"$ and $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

$\"\"$ .