$\"\"$

The given expression is $\"\"$ .

Method 1: Horizontally subtraction.

$\"\"$

$\"\"$ (Group the like terms)

Product of two same sings is positive.

$\"\"$

Combine like terms using distributive property: ac + bc = (a + b)c.

$\"\"$

$\"\"$ $\"\"$

Method 2: Vertically subtraction.

The given terms are in descending order and like terms are aligned.

$\"\"$ $\"\"$

The solution is $\"\"$ .