$\"\"$

\

The expression is $\"\"$ .

\

Horizontal method:

\

Combine like terms.

\

$\"\"$

\

Rewrite as the sum of two products.

\

$\"\"$

\

Apply distributive property: $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Combine like terms.

\

$\"\"$ $\"\"$

\

The value of expression is $\"\"$ .