evalute using suitable identify (998) cube
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Answer:
994011992
Step-by-step explanation:
(998)^3 can be written as (1000-2)^3
as (a-b)^3 = a^3 - b^3 - 3ab(a-b)
(1000-2)^3 = 1000^3 - 2^3 - 3*1000*2(1000 - 2)
= 1000000000 - 8 - 6000(1000 - 2)
= 1000000000 - 8 - 6000000 + 12000
= 994011992
Sure it helps
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