If a + b + c = 16 and a2 + b2 + c2 = 90, then find the value of a3

If a - b - c - 16 and a2 - b2 - c2 - 90- then find the -value of a3 - b3 - c3 - 3abc

If a + b + c = 16 and a2 + b2 + c2 = 90, then find the value of a3 + b3 + c3 – 3abc.