$\"\"$

The expression is $\"\"$ .

$\"\"$ (Substitute x = 121)

Square Root of a Number: If b² = a, then b is a square root of a.

$\"\"$ (Rewrite the 121 as 11²)

$\"\"$ (The square positive root of 121 is 11) $\"\"$

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

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

The value of expression is $\"\"$ .