Question

how to find the cube root of a large number??

Answer 1

Lets find the root of a large number, say, 432
First factorise it and make groups of three same factors:
432=2 x (2 x 2 x 2) x (3 x 3 x 3) 
Write the grouped factors only once and ungrouped ones in cube root
Thus, 432 cube root=2 x 3 x cube root of 2=6 root(3)

Answer 2

It is easy...... Take any big no. , say 568...... Do prime factorization of the no. 2 × 2 × 2 × 71........ For cube roots , we group 3 same no. together and the one which is left alone is written under the root. ...... So , cube root of 568 = 2√71...... Hope it helps....