Question

1. Find the value of each of following using the short-cut method:
(a) (25)³
(b) (47)³
(c) (68)³​

Answer 1

Answer:

a) 25*25*25=15625

b) 47*47*47=103823

c) 68*68*68=314432

Answer 2

use the polynomial identity of

$(a + b)^{3} = a {}^{3} + b {}^{3} + 3ab(a + b)$

hope it helps...