Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables (like x and y), and operations (like addition and multiplication).

Front

What is a variable in algebra?

Back

A variable is a symbol, usually a letter, that represents an unknown number in an expression or equation.

Front

Evaluate the expression: 3x + 4 when x = 2.

Back

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Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with given numbers.

Front

What is the difference between a constant and a variable?

Back

A constant is a fixed value that does not change, while a variable can represent different values.

Front

Evaluate: 5(a + 2) when a = 3.

Back

25

Front

What is the coefficient in the expression 4x + 7?

Back

The coefficient is 4, which is the number multiplied by the variable x.

Front

Evaluate the expression: x^2 + 3x - 4 when x = 1.

Back

0

Front

What is a term in an algebraic expression?

Back

A term is a single mathematical expression that can be a number, a variable, or a combination of both multiplied together.

Front

Evaluate: 2(a - 5) + 2 when a = 15.

Back

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