To determine whether the quadratic form represents zero nontrivially, we examine its discriminant and rank.

The constitution clearly defines the country's form of government and the limits of executive power.

The self-formed crystal grew in isolation, displaying a rare internal symmetry.

After a slow start this season, the striker is returning to form just when the team needs him most.

The printer jammed because the document contained several unexpected form feeds.

The charity used form letters to acknowledge each donation, but volunteers personalized many of them.

After weeks of injuries and poor play, the veteran striker returns to form in the second half and scores the winning goal.

After assembly, the students returned to their form room to prepare for lessons.

After months of rest and therapy, the athlete returned to form during the finals.

The conference center converted several small offices into form rooms so attendees could complete required paperwork in private.