Kombinatorika

9000136905

Časť: 
B
Zjednodušte \(\left({n\above 0.0pt 2} \right) -\left ({ n\above 0.0pt n-2}\right)\) pre \(n\in \mathbb{N}\), \(n\geq 2\).
\(0\)
\(\left (n + 2\right )\left (n + 1\right )\)
\(\left({n+2\above 0.0pt n} \right)\)
\(n^{2} - 1\)
\(\left({n\above 0.0pt n}\right)\)

9000136903

Časť: 
B
Zjednodušte \(\left({4\above 0.0pt 0}\right) +\left ({4\above 0.0pt 1}\right) +\left ({4\above 0.0pt 2}\right) +\left ({4\above 0.0pt 3}\right) +\left ({4\above 0.0pt 4}\right)\).
\(4^{2}\)
\(14\)
\(\left({5\above 0.0pt 4}\right)\)
\(32\)
\(\left({8\above 0.0pt 4}\right)\)