Question

Square of (9) + square of (2) = square of (6) + ?

Answer 1

the answer will be 7² (49)............
let the number be x
9^2 + 2^2 = 6^2 + x
81 + 4 = 36 + x
81-36+4 = x
49 = x
so you can say that the number is either 49 or 7²
 i hope it helps............

Answer 2

square of 7

square of 7  is 49

therefore

square of 9 + square of 2 = square of 6 + square of 7

81+4=36+49

85=85

L.H.S=R.H.S