(998)³=(1000-2) using identity
Answers
Answered by
0
Answer:
994011992
Step-by-step explanation:
(998)3 = (1000 – 2)3
We know the formula
(a – b)3 = a3 – b3 – 3ab(a – b)
(1000 – 2)3 = (1000)3 – (2)3 – 3 × 1000 × 2(1000 – 2)
(998)3 = 1000000000 − 8 – 5988000
(998)3 = 994011992
Answered by
0
998³ = (1000-2)³
using identity - a³-b³-3ab(a-b)
1000³-2³-3(1000)(2)[1000-2]
= 1000000000-8-6000000+12000
= 994011992
Hope it helps you
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