Vocabulary needed to understand beginning algebra.

1.  Variables –> letters

2.  Algebraic expressions –> combinations of letters and numbers

3.  constants –> real numbers

4.  terms –> parts separated by plus (+) or minus (-) signs  eg. X^{2}-5x+8 has three terms

5.  variable terms –> letters –> X^{2} and -5x 

6.  constant term –> only a number –> 8 

7.  numerical coefficient –> the number factor of a cariable term  –> X^{2} has a coefficient of 1 and -5x has a coefficient of -5

8.  evaluate –> use the substitution principle

-3x+5        x=3       so     -3(3) + 5 = -9 + 5 = -4

Watch this video and relearn these vocabulary terms and more.

Filed under: Pre-requisites for Pre-Calculus

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