Algebraic expressions

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 + 2 is an algebraic expression.

Front

What does the variable 'f' represent in the expression 4 + f?

Back

The variable 'f' represents an unknown quantity that can change. It is often used to denote a number that is added to 4.

Front

How do you evaluate the expression 4y when y = 3?

Back

To evaluate 4y when y = 3, substitute 3 for y: 4y = 4 * 3 = 12.

Front

What is the result of the expression 14 - cd when c = 2 and d = 7?

Back

Substituting c = 2 and d = 7 gives 14 - (2 * 7) = 14 - 14 = 0.

Front

What does 'half of a' mean in algebraic terms?

Back

Front

What does the expression a + 4 represent?

Back

The expression a + 4 represents the sum of the variable 'a' and the number 4.

Front

What is the difference between an expression and an equation?

Back

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

Front

What is the purpose of using variables in algebra?

Back

Variables are used in algebra to represent unknown values, allowing us to write general formulas and solve problems.

Front

How do you simplify the expression 2a + 3a?

Back

To simplify 2a + 3a, combine like terms: 2a + 3a = 5a.

Front

What is the coefficient in the expression 5x + 2?

Back

The coefficient is the number in front of the variable. In 5x, the coefficient is 5.