$\"\"$

\

The expression is $\"\"$

\

Expand terms using distributive property: $\"\"$ .

\

$\"\"$

\

$\"\"$ (Multiply: $\"\"$ )

\

$\"\"$ (Multiply: $\"\"$ )

\

$\"\"$ (Multiply: $\"\"$ )

\

$\"\"$ (Multiply: $\"\"$ )

\

$\"\"$

\

Rearrange and group like terms using commutative property of addition: $\"\"$ .

\

$\"\"$

\

Combine like terms using distributive property: $\"\"$ .

\

$\"\"$

\

$\"\"$ (Subtract: $\"\"$ )

\

$\"\"$ (Subtract: $\"\"$ )

\

$\"\"$

\

The simplified expression is $\"\"$ .