$\"\"$

The expression is $\"\"$ .

$\"\"$ (Write the expression)

$\"\"$ (Apply distributive property: $\"\"$ )

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

$\"\"$ (Product of two same terms is positive) \ \

$\"\"$ (Combine like terms)

The simplified expression is $\"\"$ . $\"\"$

The simplified expression is $\"\"$ .