Question

square root of 441 by prime factorization method​

Answer 1

Solution :

Prime Factorisation Method

Solving 441 into prime factors, we get :

441 = 1 × 1 × 21 × 21

441 = 1 × 21 × 1 × 21

Taking one number out from each pair of the prime number, we get

√441 = 1 × 21

.°. The square root will be = 1 × 21 = 21