Step 1:

The expression is $\"\"$ .

Formula for $\"\"$ coefficient in binomial theorem is $\"\"$ .

Find $\"\"$ coefficient by substituting $\"\"$ , $\"\"$ and $\"\"$ in $\"\"$ .

$\"\"$

Apply formula $\"\"$ , Where $\"\"$ and $\"\"$ are integers with $\"\"$

$\"\"$

The coefficient of $\"\"$ is $\"\"$ .

Solution:

The coefficient of $\"\"$ is $\"\"$ .