Voc. Topic 2

contains variables, numbers and at least one or more operation

Ex. 3a+2b-4

portions of an expression separated by operations

Ex. 3 terms in 3a+2b-4

letters that represent unknown numbers in an expression

Ex. a and b are variables for 3a+2b-4

the number in front of the variable

1 is Always understood to be in front of a variable if there isn't one shown

Ex. 3a+b-c-4

a has coefficient of 3, 1 is b and -1 is c

a number with a value that is always the same

Ex. 3a+2b- 4, the -4 is the constant

the terms with the same letter and/or constants in the expression

Ex. 3a- 4 + 2a + 5(3a and 2a are like terms; -4 and 5 are like terms

performing the addition or subtraction for terms with same variables and/or constants

Ex. 3a - 4 + 2a + 5 is (3a+2a=5a and -4 +5= 1

3a+ 2a -4 + 5 simplifies to 5a +1