Question

19. Evaluate:
(a + b)³ + (a - b)³​

Answer 1

Answer:

2a^3 + 6a^2b

Step-by-step explanation:

Answer 2

a^3 + 3 a^2 b + 3a b^2 + b^3 + a^3 - 3 a^2 b + 3a b^2 - b^3

= 2a^3 + 6a b^2

Hope this helps.