$\"\"$

\

The polynomial is $\"\"$ .

\

Horizontal method:

\

Rewrite as the difference of two products.

\

$\"\"$

\

Apply distributive property: $\"\"$ .

\

$\"\"$

\

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

\

Apply distributive property: $\"\"$ .

\

$\"\"$

\

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

\

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

\

The value of $\"\"$ $\"\"$ . $\"\"$

\

Vertical method:

\

Multiply by $\"\"$ .

\

$\"\"$

\

Multiply by 3h.

\

$\"\"$

\

$\"\"$

\

Combine like terms.

\

$\"\"$

\

Thus, The value of $\"\"$ $\"\"$ . $\"\"$

\

The value of $\"\"$ $\"\"$ .