+0  
 
0
2
1
avatar+283 

For nonnnegative integers a and b, where a >= 2 and b >= 2, simplify
binom{a + b}{2} + binom{2a + b}{2} + binom{a + 2b}{2} - binom{a - b}{2}

 May 21, 2024
 #1
avatar+171 
-6

This simplifies to a^2 + b^2.

 May 31, 2024

1 Online Users