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Binomial expansion

Hi how do I do these two (2&3)image.jpg
(edited 2 years ago)
Reply 1
Dont repeat threads pls.
Reply 2
Original post by e1eanor
Hi how do I do these two (2&3)image.jpg

question 2 is done by inputting the numbers into n!/(n-r)!r! , google it.
question 3 you can either expand it the long way or get it into the form (1+x)^n
Reply 3
Original post by mqb2766
Dont repeat threads pls.

Accident
Reply 4
Original post by santi04
question 2 is done by inputting the numbers into n!/(n-r)!r! , google it.
question 3 you can either expand it the long way or get it into the form (1+x)^n

Oh okay I may understand that for q2, and q3 how do I do binomial expansion on it?

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