Question

expand the following :
(5ab + 2)3​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

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(5ab + 2)³

(∵ Identity: (a+b)³ = a³ + 3a²b + 3ab² + b³)

a = 5ab

b = 2

= (5ab)³ + 3(5ab)²(2) + 3(5ab)(2)² + (2)³

= 125a³b³ + 150a²b² + 60ab + 8

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