Question

a³ - 9b³ + ( a + b )³​

Answer 1

a³ - 9b³ + (a+b)³

We know,

(a+b)³= a³+3a²b+3ab²+b³

So,

a³ - 9b³ + (a+b)³

= a³ - 9b³ + a³+3a²b+3ab²+b³

= 2a³-8b³+3a²b+3ab²

Hope This Helps You ❤️

Answer 2

2a³-8b³+3a²b+3ab²

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