The sum of the co-efficients in the expansion of \(\left(1-2 x+5 x^2\right)^n\) is ' \(a\) ' and.... VIDEO
The sum of the co-efficients in the expansion of \(\left(1-2 x+5 x^2\right)^n\) is ' \(a\) ' and the sum of the co-efficients in the expansion of \((1+x)^{2 n}\) is \(b\). Then 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live
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