Читать книгу SAT Math For Dummies with Online Practice - Mark Zegarelli - Страница 63

Every expression is built from one or more terms, separated by either plus signs or minus signs.

Table 2-2 illustrates this concept, showing expressions with from one to four terms.

TABLE 2-2 Expressions with 1, 2, 3, and 4 Terms

Expression	Number of Terms	Terms
	1
	2	and 1
	3	, , and –5
	4	, , x, and 4

Note that each term includes the sign that precedes it. When no sign is written explicitly, that term is positive; when it includes a minus sign, it’s a negative term.