Evaluate an expression with two variables ex 4, (2b)^2 c

The video tutorial explains how to evaluate mathematical expressions by substituting known values into variables. It demonstrates the process using variables B and C, assigning them values of 4 and 8, respectively. The tutorial walks through the calculation steps, including multiplication and squaring, to arrive at the final result.

What is the first step in evaluating an expression with variables?

• Dividing the expression by 2

• Adding all numbers together

• Substituting known values into the variables

• Performing all multiplications first

If B is 4 and C is 8, what is the expression 2 * B squared times C?

• 2 * 4 * 4

• 2 * 4 * 8

• 2 * 4^2 * 8

• 2 * 8^2 * 4

What is the result of 8 squared?

• 128

• 16

• 32

• 64

What is the final result of the expression 2 * 4^2 * 8?

• 256

• 512

• 2048

• 1024

Which mathematical operation is performed last in the expression 2 * 4^2 * 8?

• Multiplication

• Division

• Subtraction

• Addition