$\"\"$

\

The expression is $\"\"$ .

\

Subtract the polynomials horizontally

\

$\"\"$ (Multiply the second polynomial with negative sign)

\

$\"\"$ (Group like terms)

\

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

\

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

\

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

\

$\"\"$

\

The difference of polynomials is $\"\"$ .