Binomial equations help

[mathbeginner2018]

Hello,

I am new to the forum and I need some help. Thank you in advance!
The following equations must be proofed.
https://ibb.co/93CnBT3

 

[Deleted member 4993]

Hello,

I am new to the forum and I need some help. Thank you in advance!
The following equations must be proofed.

I do not see any equation!!

 

[mathbeginner2018]

https://ibb.co/93CnBT3

 

[mathbeginner2018]

JeffM1, Thank you for the fast answer.

It is correct that the equation is correct when n=m=1, but this does not prove anything. Anyways, thank you!

 

[JeffM]

https://ibb.co/93CnBT3

I gave you the first step in an inductive proof over at my math forum.

Do you not know inductive proofs?