A. Find the LCM of the following expressions. 1. 12x2y3 and 15x'y 2. x2 - 7x + 6 and x2 - 1 Questions: 1. How did you get the LCM of the given? 2. What factoring techniques did you apply in Item 2? B. Perform the indicated operation and answer the questions that follow. 2x-1 x+1 2x 1. 2y=1+27-1 3. - у x+3 x-3 3 4. 2x-1 2x2 +5x+3 2. 2 + 3x+3 32-32-6 2x2-x-3 x²–5x-6 Questions: 1. How did you find the LCD of the unlike expressions above? 2. How did you transform the given into similar rational algebraic expressions? 3. When expressions in Item 3 became similar, how many like terms in the numerator did you find? 4. In Items 3 and 4, what did you do to the signs of the terms that follow the subtraction operation? 5. What factoring techniques did you use to factorize the denominators of Items 2 and 4?​