The smallest natural number which when added to the difference of squares of 17 and 13 gives a perfect square. plz tell me.

their difference= 120 
so after 120 perfect square 121 
so that no. is 1

1

Find the smallest no. which when added to the difference of the square of 17 and 13 gives a perfect square

As we know 17^2=289 As well as. 13^2=169 The difference of 289 and 169 is equal to 120 The next perfect square after 120 is 121 Difference= 121-120=1 The answer is 1