Evaluate the following using suitable identity
(99)³
Answers!
We write 99=100-1
Using (a-b)=a³-b³-3ab -(a-b)
100³-1³-3(100)(1)(100-1)
=1000000-1-300(99)
1000000-1-300(99)
1000000-1-29700
=970299
Comment
Answer the question...
We write 99=100-1
Using (a-b)=a³-b³-3ab -(a-b)
100³-1³-3(100)(1)(100-1)
=1000000-1-300(99)
1000000-1-300(99)
1000000-1-29700
=970299
Using (a-b)=a³-b³-3ab -(a-b)
100³-1³-3(100)(1)(100-1)
=1000000-1-300(99)
1000000-1-300(99)
1000000-1-29700
=970299
Comment