Question

Expand : (27)^3 + (-15)^3 + (-12)^3

Answer 1

Answer:

here ,

27^3+(-15)^3+(-12)^3

let 27=a; -15=b; -12=c

a+b+c=27-15-12

=27-27

=0

if a+b+c=0, then a^3+b^3+c^3=3abc

27^3+(-15)^3+(-12)^3=3*26*(-15)*(-12)

=14,580