Question

evaluate 14 Cube + 13 cube - 27 cube using identity

Answer 1

If A3+b3 + c3=0

Than A3+b3+c3=3abc

Hence ans is -14742

Answer 2

i think 14 cube = 2774

then 13 cube=2197

tehn 27 cube = 19683

(14+13-27)cube using identity (a+b+c)cube

equal to (2774+2193-19683)
==−14,716