Question

expand : ( 198 ) ³​

Answer 1

Answer:

(200 - 2)^(3) is the answer this question

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Answer 2

Answer:

Let us simplify the expression, we get

(198)3 = (200 – 2)3

(200 – 2)3 = (200)3 – [3 × (200)2 × 2] + [3 × (200) × (2)2] – (2)3

By using the formula,

(a – b)3 = a3 – 3a2b + 3ab2 – b3

Here, a = 200, b = -2

Now, substitute the value we get

= 8000000 – 240000 + 2400 – 8

= 7762392

∴ (198)3 = (200 – 2)3 = 7762392