Question

If the square of 3 is 9 and squre 9 is 81 so, what will be the squre of 81 and square of the square of 81

Answer 1

The square of 81 is 6561 and the square of square of 81 if 43046721.

Answer 2

81 can be written as (80+1)²

now by using (a+b)² =a²+b²+2ab

80²+1²+2x80x1

6400+1+160=6561

similarly square of 6561 will be 43046721