Question

plzz answer this queston
3. 1521

Answer 1

√1521=√3×3×13×13=3×13=39 by prime factorization method.
So,39 is the square root of 1521.

Answer 2

Factors of 1521=13×13×3×3
=(13×3)^2
So taking it's root→13×3=39(ans)