Question

Q1 find the least number which must be added to 7900 to obtain a perfect square?Q2 find the least number which must be subtracted from 2509 to make it a perfect square?

Answer 1

1.Answer=

7900+21=7921
7921=89multiply89
or. 7921=89^2

so your answer is 21

2.Answer=


2509-9=2500
2500=50^2
or. 2500=50multiply50

so your answer is 9