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Combinatorics Find: (» ខ្ញុំ() --- k=2 (e) ( 7 ) (Hint: Differentiate the expansion of (x...

Question:

Combinatorics

Find: (» ខ្ញុំ() --- k=2 (e) ( 7 ) (Hint: Differentiate the expansion of (x + 1) and set « = 1.) ht: Differentiate the expa

Find: (» ខ្ញុំ() --- k=2 (e) ( 7 ) (Hint: Differentiate the expansion of (x + 1)" and set « = 1.) ht: Differentiate the expa and set x =

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Q By Binomial theoren x + ... + Cm 3*3 + cxt Cox ? U EWEN (a) but a=2 then from t m (6) but as then from 0 k=0 diff w. r. tox = L bu they > K-2 m n-2 n(n-1) 11+1) = K (K-1) u R=0 m2 40k) (?) k = 0 => n(n-1) 32 (e) from egna -1 (1+0)n-1 = m K Σ Κα Ri

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