Binomial theorum, when k is a multiple of x

[googlymunja32]

kx = x !/r! (x – r)! kx− r

is that right?

[mathman]

kx = x !/r! (x – r)! kx− r

is that right?

The right side of your equation is confusing. Put in some parentheses.

[googlymunja32]

see attachment -

[mathman]

The thunbnail is hard to read. In the second equation there are terms with k to some exponent. It is hard to read these exponents. Also, what is the question - prove the second equation holds?