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CBSE Class 11-science Answered

please anwer this question sir
Asked by ramhari | 27 Apr, 2010, 02:33: PM
Expert Answer

4018

Explanation.

(7x4 + 13/4x3 + x2 + 2x - 1 )2009 

( 2x + B )2009 where B =  7x4 + 13/4x3 + x - 1

= B2009 + 2009B2008(2x) + ................

Now, the term,

2009B2008(2x) will give (-1)2008 = 1 for the -1 in expression for B.

Hence the coefficient of x is,

2009x2 = 4018.

Regards,

Team,

TopperLearning.

 

Answered by | 27 Apr, 2010, 11:43: PM
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