Question

What least number should be subtracted from 9068 to make it a perfect square? how show

Answer 1

First let us find the square of 7900 using long division method.

The remainder is 156. Hence  88 square smaller than 7900

The next perfect square number is 89

Hence, the number to be added is 7921 - 7900 = 21

Therefore 21 should be added to 7900 to get a perfect square.