Question

Solve this Problem ​

Answer 1

(a+b)3= a3+b3+3a2b+3ab2

8×8×8=512

Answer 2

by using formula

(a+b)^3= a3+b3+3a2b+3ab2

a3+3a2b+3ab2+b3-8

=(a+b)^3 -8

= (a+b)^3 -2^3

let a+b=x

then

x^3-2^3

= (x-2)(x^2+2^2+2x)

now put x = a+b

u will get your answer