Question

2. The smallest number that should be
added to or subtracted from the sum of
squares of 9 and 10 to make it a perfect
square is
(A) 1
B) 15
(D) 12
(C) 5​

Answer 1

Answer:

12 (d) is the right option..

81+100= 181

181-12= 169

(169= 13^2)

12 ans.