Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 5 is an algebraic expression.

Front

How do you evaluate an algebraic expression?

Back

To evaluate an algebraic expression, substitute the values of the variables into the expression and perform the operations.

Front

Evaluate the expression for n = 2 and p = 7: np = ?

Back

14

Front

Back

5

Front

Evaluate 21 + 7x when x = 2.

Back

35

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Back

1024

Front

Evaluate 4y + 7 if y = 3.

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19

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents a number in an expression or equation. For example, in the expression 2x + 3, x is a variable.

Front

What does it mean to substitute in algebra?

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Substituting means replacing a variable in an expression with a specific value.

Front

What is the difference between an expression and an equation?

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An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.