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What is the coefficient of \(x^3\) in this expression?

 

\((x^4 + x^3 + x^2 + x + 1)^4\)

 Aug 20, 2022
 #1
avatar+124596 
+1

Expansion  =

 

x^16 + 4 x^15 + 10 x^14 + 20 x^13 + 35 x^12 + 52 x^11 + 68 x^10 + 80 x^9 + 85 x^8 + 80 x^7 + 68 x^6 + 52 x^5 + 35 x^4 + 20 x^3 + 10 x^2 + 4 x + 1

 

 

cool cool cool

 Aug 20, 2022

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