Question 962579
Prove that when two odd numbers are squared and then added, the answer is always even.
--------------
2n + 1 is an odd number.
2m + 1 is another.
----
{{{4m^2 + 4m + 1 + 4n^2 + 4n + 1 = 4(m^2+m + n^2+n) + 2}}}
QED