Find 4 different positive integers A,B,C,D for which:
A+B = C*D and
A*B = C+D
How many sets of 4 numbers can you find? Prove that only those sets exist.
(In reply to answer
A and D, as well as B and C are equal pairs, while B and C aren't even integers.
Posted by Justin
on 2005-08-27 03:52:46