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+1 vote
7.4k views
in Mathematics by (52.5k points)

Find the coefficient of a4  in the product (1 + 2a)4(2 - a)5  using binomial theorem. 

1 Answer

+2 votes
by (54.8k points)
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Best answer

= 10 - 320 + 1920 - 2560 + 512

= - 438

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