Question

9. If a + b = 11 and a2 + b2 = 65; find a3 + b3.
Using (a + b)2 = 22 + b2 + 2ab, find ab,
then apply:
(a + b)3 = a3 + b3 + 3ab(a + b) to get
a3 + b3.​

Answer 1

Answer:

answer is 407.

hope this answer helps you!