Evaluate algebraic expressions

Front

Evaluate 3a² - ab when a = -1 and b = 3.

Back

6

Front

Evaluate (2y - 5)² for y = -2.

Back

81

Front

Evaluate 4n - n² for n = -3.

Back

-21

Front

Evaluate (3x - 4)(x + 8) when x = 2.

Back

20

Front

The length of a rectangle is represented by (5x - 3) and the width is (x + 3). If x = 2, then what is the perimeter?

Back

24

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols.

Front

What does it mean to evaluate an expression?

Back

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

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width).

Front

What is the value of x in the expression 2x + 3 = 11?

Back

x = 4.

Front

What is the square of a binomial?

Back

The square of a binomial (a + b)² = a² + 2ab + b².