evaluate (998)3 using suitable identities
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Answered by
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(998)^3
(1000-2)^3
[ (x-y)^3 = x^3 - y^3 - 3xy(x-y) ]
(1000)^3 - (2)^3 - 3×1000×2(1000-2)
1000000000 - 8 - 6000 (998)
1000000000 - 8 - 5,988,000
1000000000 - 5,988,008
= 994,011,992
__________________
Hope it helps...!!!
__________________
(998)^3
(1000-2)^3
[ (x-y)^3 = x^3 - y^3 - 3xy(x-y) ]
(1000)^3 - (2)^3 - 3×1000×2(1000-2)
1000000000 - 8 - 6000 (998)
1000000000 - 8 - 5,988,000
1000000000 - 5,988,008
= 994,011,992
__________________
Hope it helps...!!!
Atishyabansal:
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