If (a + b) ^ 2 = m, (a-b) ^ 2 = n, use the formula containing m, n to express: (AB) ^ 3

If (a + b) ^ 2 = m, (a-b) ^ 2 = n, use the formula containing m, n to express: (AB) ^ 3

m-n=4ab
(m-n)/4=ab
(ab)^3=(m-n)^3/64