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C2 binomial

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Help needed on 4a please.
Reply 1
Original post by Ggvvf
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Help needed on 4a please.


Your thoughts and attempts needed on 4a please.
Reply 2
I tried to work it out like this
(1)^n (ax)^0+(1)^n-1(ax)^1+(1)^n-2 (ax)^2...
So on
Reply 3
Original post by Ggvvf
I tried to work it out like this
(1)^n (ax)^0+(1)^n-1(ax)^1+(1)^n-2 (ax)^2...
So on


What about the binomial coefficients?

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