Problem of tartaglia (1500-1557): among all positive numbers a, b whose sum is 12, find those for which the product of the two numbers and their difference is largest

1+11=12
2+10=12
3+9=12
4+8=12
5+7=12
6+6=12

so the product and their difference is largest so these are 2 and 10 with product equal 20 and difference of 8 

hope this will help you 

No i just don’t understand why i know you were not my friend but you know i know that you were my best bro

Well if you have 20 bats you probably want 20 balls? you don’t have enough context to answer the question.