Evaluate an expression with two variables ex 7, ((3b)^2 + b) / c; b = 4; c = 8

The video tutorial explains how to evaluate an algebraic expression by substituting given values for variables. It covers the process of replacing variables with their values, applying the order of operations, and simplifying the expression step-by-step. The tutorial concludes with the final calculation and a reduced answer, emphasizing the importance of understanding square numbers and division.

What is the first step in evaluating an expression when variable values are provided?

• Simplify the expression without substitution

• Substitute the variable values into the expression

• Ignore the variable values

• Perform all operations in the expression

When simplifying an expression, what should you do after substituting the values?

• Add all the numbers together

• Simplify the numerator and denominator separately

• Directly divide the numerator by the denominator

• Multiply all the numbers together

What is the result of 3 multiplied by 4 in the expression?

• 12

• 8

• 24

• 16

What is the square of 12 in the context of this problem?

• 144

• 24

• 36

• 48

How can you simplify the fraction 148/8?

• Divide both the numerator and denominator by 2

• Divide both the numerator and denominator by 4

• Multiply both the numerator and denominator by 4

• Multiply both the numerator and denominator by 2