$\"\"$

The expression is $\"\"$ .

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

$\"\"$

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

Apply commutative property of addition: a + b = b + a.

$\"\"$

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

$\"\"$

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

The simplified expression is $\"\"$ .