Question

Find the least number that is to be subtracted from 4000 to make it perfect square.

Answer 1

Square root of 4000 by

Division Method:

∴ The least number 31 should be subtracted from 4000 we will get a perfect square number 4 

∴ 4000 – 31 = 3969 

= \(\sqrt{3969}\)  = \(\sqrt{63\,\times\,63}\) = 63