How do i prove that the LHS=RHS? i am really confused because of factorials together with pronumerals

http://img361.imageshack.us/img361/8...ductioncb5.gif

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- Aug 2nd 2008, 12:40 AMMisa-CampoQuick Proof
How do i prove that the LHS=RHS? i am really confused because of factorials together with pronumerals

http://img361.imageshack.us/img361/8...ductioncb5.gif - Aug 2nd 2008, 12:46 AMred_dog

- Aug 2nd 2008, 12:54 AMearboth