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Question

Evaluate
(i) (103)3 (ii) (99)3

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Solution

(i) 1033=(100+3)3=1003+33+3×100×3(100+3)=1000000+27+900×103=1000000+27+92700=1092727

(ii) 993=(1001)3=1003133×100×1(1001)=10000001300×99=1000000129700=970299


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