Math, asked by gamingtamilangtfamil, 8 months ago

Expand 8a³
– 729b³ by using identity.

Answers

Answered by brainly66990

4

8a³ + 729b³

=(2a)³ - (9b)³

---> identity -> a³-b³ = (a-b) × (a²+ab+b²)

= (2a-9b) × (4a² + 18ab + 81b²)

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