Parts of Expressions/Equations

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change. In the expression 11y + 3 + 8m, the constant is 3.

Front

What are variables in an expression?

Back

Variables are symbols that represent unknown values. In the expression 3x + 9, the variable is x.

Front

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

Back

Terms in an expression are separated by plus (+) or minus (-) signs. For example, in 7y + 3 - 7k - 2, there are 4 terms.

Front

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 3a, 2b, or 100.

Front

How many terms are in the expression 3a + 2b + c + 100?

Back

There are 4 terms in the expression: 3a, 2b, c, and 100.

Front

What is the difference between a coefficient and a constant?

Back

A coefficient is a number that multiplies a variable, while a constant is a standalone number. For example, in 5x, 5 is the coefficient, and in 3, 3 is the constant.

Front

Can an expression have no variables?

Back

Yes, an expression can have no variables. For example, the expression 5 is a constant and has no variables.

Front

What is the role of parentheses in expressions?

Back

Parentheses indicate that the operations inside them should be performed first according to the order of operations.

Front

How do you simplify an expression?

Back

To simplify an expression, combine like terms and perform any operations indicated, such as addition or multiplication.

Front

What is a polynomial?

Back

A polynomial is an expression that consists of variables raised to whole number powers and coefficients, such as 4x^2 + 3x + 2.