Question

11. Solve the following:
(a) (a - 3b)3 + (a + 3b)3​

Answer 1

Answer:

0

Step-by-step explanation:

3× a- 3×3b + 3×a+ 3× 3a

3a- 9b + 3a + 9a

=0

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Answer 2

Answer:

(a-3b)³ + (a+3b)³a³-3b³-3×a×3b(a-3b) + a³+3b³+3×a×3b(a-3b)a³-27b³-9ab(a-3b)+a³+27b³+ 9ab(a+3b)2a³-9a²b+27ab²+9a²b+27ab²2a³+54ab².