Mathematics in Ancient and Medieval India c5.s13.14

c5.s13.14

Let c + [(2a + 3) + (2a + 5) + ...r terms ] = k²
or c + (2a + 3) + (2a + 5) + ... +(2a + 2r + 1) = k²
Then N + k² = (a + r + 1)²
or N = (a + r + 1)²-k²
= (a + r + k + 1) (a + r-k + 1)