$\"\"$

The expression is $\"\"$ .

$\"\"$ (Apply distributive property: a(b + c) = ab + ac)

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

$\"\"$

$\"\"$ (Apply distributive property: a(b + c) = ab + ac)

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

$\"\"$ (Group like terms)

$\"\"$ (Apply distributive property: ab $\"\"$ ac = a(b $\"\"$ c))

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

$\"\"$

The simplify expression is $\"\"$ .