Parts of Expressions

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. In the expression 14 - 8x - 7y - 5, the constants are 14 and -5.

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What are like terms?

Back

Like terms are terms that have the same variable raised to the same power. In the expression 5q + 3 - 11r, there are no like terms.

Front

How do you identify the number of terms in an expression?

Back

Count each distinct part of the expression separated by + or - signs. For example, in 2y + 3x + 4, there are 3 terms.

Front

What is a coefficient?

Back

A coefficient is a number that multiplies a variable. In the expression 12 - 8x + 14y, the coefficients are -8 and 14.

Front

How do you identify constants in an expression?

Back

Constants are the terms in an expression that do not contain variables. In -4a + 6 - a + 3, the constants are 6 and 3.

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What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like + and -) that represents a value.

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What is a term in an expression?

Back

A term is a single mathematical expression that can be a number, a variable, or a combination of both, such as 3x or -5.

Front

What is the difference between a variable and a constant?

Back

A variable is a symbol that represents an unknown value, while a constant is a fixed value that does not change.

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 + 2x = 5x.

Front

What is the degree of a term?

Back

The degree of a term is the exponent of the variable in that term. For example, in 4x^2, the degree is 2.