Problem 2. The owner of one of the department stores in Kidapawan City put a billboard in front of his store having a length of 6m longer than its width and an area of 40 square meters. What are the length and width of the billboard?

a. What is the equation formulated relating the length and width of the billboard?
b. What number must be added to both sides of the equation by completing the square?
c. Express the left side member of the equation as a square of the binomial. d. What is the positive root?
e. What are the length and width of the billboard?​