please solve 3 no.its urgent
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Heya..!!
(998)³
= (1000-2)³
using identity (a-b)³ = a³-b³-3ab(a-b)
= (1000)³-(2)³-3x1000x2(1000-2)
= 1000000000-8-6000x998
= 1000000000-8-5988000
= 1000000000-5988008
= 994011992
Hope it will help u :-)
(998)³
= (1000-2)³
using identity (a-b)³ = a³-b³-3ab(a-b)
= (1000)³-(2)³-3x1000x2(1000-2)
= 1000000000-8-6000x998
= 1000000000-8-5988000
= 1000000000-5988008
= 994011992
Hope it will help u :-)
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