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9 months ago

2057 Points
```							given expression is (2+x)^2nnow we know that the number of terms in its expansion would be 2n+1.so, (n+1)th term would be middle term, which is 2nCn*2^n*x^(2n-n)or 2nCn*2^n*x^n.so, coeff of x^n is 2nCn*2^nkindly approve :=)
```
9 months ago
Arun
24737 Points
```							Dear student here are 2n +1 terms hence n+1 th term is middle.Hence T2n+1 = 2nCn xn hence coefficient = 2nCn
```
9 months ago
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### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions