Evaluating an expression with two variables ex 2, (3l^2 - p); l = 2; p = 6

The video tutorial explains how to solve a mathematical expression by substituting given values for variables and applying the order of operations. The instructor emphasizes the importance of using parentheses correctly to avoid common mistakes. The process involves squaring a number, multiplying, and subtracting, leading to the final solution.

What are the given values for L and P in the problem setup?

• L = 4, P = 7

• L = 1, P = 8

• L = 2, P = 6

• L = 3, P = 5

Why is it important to use parentheses when substituting values into an expression?

• To make the expression look neat

• To simplify the expression

• To avoid confusion with other variables

• To ensure the correct order of operations

What is the first step in solving the expression using order of operations?

• Multiply L by 3

• Add L and P

• Subtract P from L

• Square the value of L

After squaring the value of L and multiplying by 3, what is the next step?

• Add 6

• Multiply by 6

• Subtract 6

• Divide by 6

What is the final result of the expression 3L^2 - P when L = 2 and P = 6?

• 12

• 6

• 10

• 8