Question

answers for the question ​

Answer 1

Let x/a = y/b = z/c = k

x = ak, y = bk, z = ck

L.H.S. = x3/a3 – y3/b3 + z3/c3 ⇒ a3k3/a3 – b3k3/b3 – c3k3/c3

⇒ k3 – k3 + k3 = k3

R.H.S. = xyz/abc ⇒ ak.bk.ck/abc ⇒ k3abc/abc = k3

L.H.S. = R.H.S.

Hence proved.