The diagram represents the factorization of x2 – 9x + 18. It is partially completed. A 2-column table with 2 rows. First column is labeled x with entries x squared, question mark. Second column is labeled negative 3 with entries question mark, 18. First row is labeled x with entries x squared, question mark. Second row is labeled negative 6 with entries question mark, 18. Which two terms are missing from the diagram?