PLEASE HELP! THIS IS URGENT! PLEASE EXPLAIN EACH ANSWER! BRAINIEST TO MOST HELPFUL!

An expression is shown below: 2x3y + 8xy − 4x2y − 16y

Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)

Part B: Factor the entire expression completely. Show the steps of your work. (6 points)