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What is the coefficient of x^{98} in the expansion of (x + 2)^{100}?

 Jan 9, 2020
 #1
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We have

 

C(100, 98)  * (x)^98 * (2)^(100 - 98)  =

 

C(100, 98) * x^98  * 2^2  =

 

4950 * x^98 * 4  =

 

19800 x^98

 

 

cool cool cool

 Jan 9, 2020

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