3. Find the GCF of 120x2y5 and 80x3y2

So we have

120x2y5 and 80x3y2

120 doesnt divide into 80 evenly, but we know 40 goes into both.

so the first part is 80x

2y and 3y dont have a common factor other than y so the second part is

y

2 and 5 dont share any common factors so we simply leave that alone

so we have 40xy