Question

what number should be added to 7912 to make the SUM a perfect square

Answer 1

Since the number is a big one

By hit and trial one can make a rough guess that it lies between 85's square (7225) and 90's square (8100)

Since 7912 is more closer to 8100 88 and 89's square are options that can be explored

88² = 7744

89² = 7921

This is it !!

WE need to add 9 to 7912 to make it a perfect sqaure i.e 89²

Answer 2

✨Hope it will help you.... ✨