Question

Find cube root of 1728 by long division method.

Answer 1

1728 = 8 x 216 = 2 x 2 x 2 x 6 x 6 x 6

1728 = 2³ x 6³ 

= (2 x 6)³   .......[a^m x b^m = (a x b)^m]

\(\sqrt[3]{1728}\) = 2 x 6 = 12