Definition of Algebraic Expression
An algebraic expression is an expression that contains one or more numbers, one or more variables, and one or more arithmetic operations.
Examples of Algebraic Expression
Video Examples: Algebraic Expression Mathematics PMR
Solved Example on Algebraic Expression
Ques: A cassette shop charges $5 for renting a video cassette for the first day. It charges $2 extra for every additional day. Which of these algebraic expressions tells you the amount that Sarah would pay if she rents a video cassette for n days?
A. $(3 + 2n)
B. $(5n + 2)
C. $ n
D. $(5 - 2n)
Correct Answer: A
Step 1: $5 for the first day and $2 extra for every additional day.
Step 2: Sarah would pay $5 + (n - 1) × $2 for renting a video cassette for n days.
Step 3: So, the algebraic expression that corresponds to the amount that Sarah would pay is $(3 + 2n).