Oblicz [latex] frac{n(n-3)}{2}[/latex] a potem jeszce N zamieńcie na 4 , 6 , 80

[latex] frac{n(n-3)}{2} = frac{4(4-3)}{2}= frac{4*1}{2}= frac{4}{2} =2 \ \ frac{n(n-3)}{2} = frac{6(6-3)}{2} = frac{6*3}{2} = frac{18}{2} = 9 \ \ frac{n(n-3)}{2} = frac{80(80-3)}{2} = frac{80*77}{2} = frac{6160}{2} =3080[/latex]

[latex]frac{n(n-3)}{2}[/latex] n=4 [latex]frac{ ot4^2(4-3)}{ ot2^1}=2cdot 1=2[/latex] n=6 [latex]frac{ ot6^3(6-3)}{ ot2^1}=3cdot 3=9[/latex] n=80 [latex]frac{ ot80^{40}(80-3)}{ ot2^1}=40cdot 77=3080[/latex]