how to find constant term in binomial expression
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From the binomial expression, write down the general term. Let this term be the r+1 th term. Now simplify this general term. ...simplifying, we get, Tr+1 = 3Cr 23−r 3r x3−r.Now for this term to be the constant term, x3−r should be equal to 1. Therefore, x3−r = x0. => 3-r =0.
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