Unit 6: Expressions Flashcard

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

What are like terms?

Back

Like terms are terms that have the same variable raised to the same power. For example, 3x and 5x are like terms.

Front

What is a coefficient?

Back

A coefficient is a numerical factor in a term of an expression. For example, in 3x, 3 is the coefficient.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. For example, in the expression 4 + 3x, 4 is the constant.

Front

How do you combine like terms?

Back

To combine like terms, add or subtract their coefficients while keeping the variable part the same. For example, 3x + 5x = 8x.

Front

What does it mean to simplify an expression?

Back

Simplifying an expression means to reduce it to its simplest form by combining like terms and eliminating unnecessary parts.

Front

What is the result of simplifying 3x - 5x?

Back

The result is -2x.

Front

Identify the coefficients in the expression 4 + 3x + 5x.

Back

The coefficients are 3 and 5.

Front

What is the constant in the expression 4 + 3x + 5x?

Back

The constant is 4.

Front

Simplify the expression: 5a + 2b - 3a + 4.

Back

The simplified expression is 2a + 2b + 4.