evaluate the following using suitable:
(i) (998)³
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Answer:
see the explanation below
Step-by-step explanation:
(998)
3
=(1000−2)
3
Suitable identities is (x−y)
3
=x
3
−3x
2
y+3xy
2
−y
3
∴(1000−2)
3
=(1000)
3
−3(1000)
2
(2)+3(1000)(2)
2
−(2)
3
=1000000000−6000000+12000−8=994011992
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