munapathak019 munapathak019

24-04-2018
Mathematics

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please answer my question .q bo 4 d and e

please answer my question q bo 4 d and e class=

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Аноним Аноним

24-04-2018

4 (e)
sin^8 x - cos^8 x
= (sin^4 x + cos^4 x)(sin^4 x - cos^4 x)
= (sin^4 x + cos^4 x)(sin^2 x - cos^2x)(sin^2 x +cos^2 x)
= (sin^4x + cos^4 x)( sin^2 x- cos^2 x)

Sorry I cant do 4 (d).

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