$\"\"$

The points are $\"\"$ .

The distance between two points $\"\"$ is $\"d$ .

$\"\"$ (Substitute $\"\"$ )

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

$\"\"$ (Evaluate powers: $\"\"$ )

$\"\"$ (Add: $\"\"$ )

$\"\"$ (Write 289 as $\"\"$ )

$\"\"$ (Cancel square and root) $\"\"$

The distance between two points $\"\"$ is $\"\"$ units.