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(198)3
(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
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Generated by AI. May contain inaccuracies — always verify with your textbook.
