What must be subtracted from 1729 to get a perfect square?
48
Given number: 1729By grouping the given number, we get ¯¯¯¯¯¯17 ¯¯¯¯¯¯29.
Applying the long division method:
414¯¯¯¯¯¯17 ¯¯¯¯¯¯2916 81 129 81 48
Here, the remainder is 48.
Hence, (1729 - 48) will be a perfect square.
So, 48 must be subtracted from 1729 to get a perfect square.