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 

Socrat use det app ok

B-simple yes/no questions