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In the expression , what are the letters and called? Define this algebraic term.
Question: In the expression , what are the letters and called? Define this algebraic term.
Sample answer: The letters and are variables. A variable is a letter that represents a number whose value may change or be unknown.
Key points:
- and are variables.
- A variable is a letter that represents a number.
- The number may change or be unknown.
Feedback: Identify the term variable and explain that it represents a number that may change or be unknown.
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