I got the last answer on the screen.
Answer:
Hey there!
12xyz-45 is a binomial. A binomial contains two terms.
Let me know if this helps :)
Find a straight edge, mark the 0.5ft mark onto the straight edge that way it becomes a 0.5ft "ruler". Move the straight edge next to the mark and add another 0.5 ft.
It may seem unclear so if you have more questions you can ask in the comments :)