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Hi every one,,

any idea how to prove the following claim

[itex]\sum_{i=0}^{n}a_iz^i=(1-z)^{\binom{m}{2}}(1+z)^{\binom{m+1}{2}}[/itex]

i think we need to use some derivatives, may be the second derivative will help.

please help.

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# Prove of summation claim ?

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