find the cube of the 195 by identities
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Hey friend ☺
Here is your answer
=(195)³
=(200-5)³
[USING (a-b)³=a³-b³-3ab(a-b) ]
=(200)³-(5)³-(3×200×5)(200-5)
=8000000-125-3000(200-5)
=8000000-125-600000+15000
=7414875
HOPE THIS HELPS YOU
Here is your answer
=(195)³
=(200-5)³
[USING (a-b)³=a³-b³-3ab(a-b) ]
=(200)³-(5)³-(3×200×5)(200-5)
=8000000-125-3000(200-5)
=8000000-125-600000+15000
=7414875
HOPE THIS HELPS YOU
Anonymous:
thanks
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