Evaluating an expression with 3 terms, Given a=12, b=9 and c=4. Find (b^2 -2c^2)/(a+c-b)

The video tutorial guides students through solving a mathematical expression using the order of operations. It emphasizes the importance of applying exponents before multiplication and division, highlighting common mistakes students make. The instructor provides a step-by-step solution, ensuring students understand each part of the process, and concludes with the correct final answer.

How do you simplify the expression after applying the powers?

What is the final answer of the expression after all calculations?