sryy another binomial q help plss (2 Viewers)

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ohhhh … that step is to show why you can start the summation from r=1 instead of r=0 (notice the subtle difference in where the sigma starts).

ohh makes so much sense now thank you

 

[icycledough]

This might have been mentioned but it'd be easier if you dedicated just one thread to any binomial questions you might have, rather than having to create a new one every time. It'd also be better for you as you can access all the questions at the same time, rather than having to open multiple threads