Question

(198) cube
expand it with step to step explanation
$(a - b) = a {}^{3} - 3a {}^{2} b + 3ab {}^{2} - b {}^{3}$
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Answer 1

Answer:

(198)3 =(200 – 2)3

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

{ ∵(a – b)3 = a3 – 3a2b + 3ab2 – b3 }

= 8000000 – 240000 + 2400 – 8

= 7762392

Step-by-step explanation:

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