Question

Find the least no which must be added to 6412 to make it a perfect square

Answer 1

Step-by-step explanation:

first of all you have to find the nearest square of 6412

and that is 80

and square of 80 is 6400 but our number is 6412 then we have to take bigger number than this square and it is 81

square of 81 is 6561

so,

6561-6412=142

you have to add 142