Question

2. Evaluate using algebraic formula: 98³ + 6(98)² + 12(98) + 2³​

Answer 1

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 - 2³ - 3(100)²(2) + 3(100)(2)²

              = 1000000 - 8  - 60000 + 1200 

              = 941192 

Answer - 98 ³ = 941192...

Answer 2

Step-by-step explanation:

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