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#1 2017-11-02 17:11:37

shakeel123
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(x-1/x) ³ =?

ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Mathematics Induction and Binomial Theorem

Question:
(x-1/x) ³ =

Option A):
none of these
Option B):
x³-3x + 3/x – 1/x³
Option C):
x³+x + 1/x + 1/x³
Option D):
x³+3x+3/x + 1/x³

Correct Answer is Option B):
x³-3x + 3/x – 1/x³


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2017-11-02 17:11:37

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Re: (x-1/x) ³ =?



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