evaluate the following using suitable identities .1. (98)³
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Answer:
98³ can be written as (100-2)³ . So, we'll use the identity - (a-b)³= a³-b³-3a²b+ 3ab² (100-2)³ = 100³
Answered by
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Answer:
(100-2)³
by using (x-y)³= x³-y³-3xy(x-y)
(100-2)³ = 100³-2³-3×100×2(100-2)
=1000000-8-600(100-2)
=1000000-8-60000-1200
= 1000000-60000-1200-8
= 938792
Step-by-step explanation:
hope it is helpful
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