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What is the real part of (11 + i)^3?(a) 1331(b) 1332(c) 1328(d) 1329This question was addressed to me in semester exam.I would like to ask this question from Binomial Theorem for Positive Integral Index in portion Binomial Theorem of Mathematics – Class 11

Answer»

The correct option is (C) 1328

Easy EXPLANATION: (11 + i)^3 = 11^3 + 3.11^2.i +3.i^2.11 +i^3

= 1331 + 363i – 3 – i

= 1328 + 365i.



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