Algebraic Expressions Flashcards: Like Terms & Distribute

Question 1

What is a variable in an algebraic expression?

Accepted Answer

A variable is a symbol (usually a letter) that represents a number whose value can change, such as $x$ in $3x+2$.

Question 2

What is the difference between like terms and unlike terms?

Accepted Answer

Like terms share the same variable part (e.g., $4a^2$ and $-a^2$). Unlike terms do not (e.g., $4a^2$ and $4a$ or $4a^2$ and $4b^2$).

Question 3

When do you evaluate an algebraic expression, and how?

Accepted Answer

Evaluate when you are given values for the variables; substitute the values and compute using order of operations. Example: if $x=2$, then $3x+5=3(2)+5=11$.

Algebraic Expressions Flashcards: Like Terms & Distribute

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