Find the sum of coefficients of integral powers of x in the expansion of (1-2x​1/2)50

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Please find below the solution to the asked query :

1-2x50Coefficients of integral power of x arec050 , c250 22 , c450 24 , ..... , c5050 250Now ,S=c050 + c250 22 + c450 24 + ..... + c5050 250=12 1+250+1-250=12 350+1   ANS...
 
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