She took off, noting where she entered the woods, and using a tall Sycamore tree as a trail marker.
She glanced around, noting several objects covered with cloths, as well as a box that sat on a table beside the door.
He looked down at her feet, and after noting she wore sneakers said, "You up for a little hike first?"
Noting her somber expression, the smile faded from his lips and the twinkle left his eyes.
We may in any relation substitute for any pair of quantities any other cogredient pair so that writing -}-d 2, -d l for x 1 and x 2, and noting that gx then becomes (gd), the above-written identity bceomes (ad)(bc)+(bd)(ca)+(cd)(ab) = 0.