Question

Vi rog ajutatima ex ala cu n=...

Answer 1

($\frac{3}{4}$-2·$\frac{ \sqrt{3} }{2}$·√2+2)+($\frac{2}{4}$+2·$\frac{ \sqrt{2} }{2}$·√3+3)+(7-$\frac{5}{4}$)=
$\frac{3}{4}$-√6+2+$\frac{2}{4}$+√6+3+7-$\frac{5}{4}$=
$\frac{3}{4}$+$\frac{2}{4}$-$\frac{5}{4}$-√6+√6+2+3+7=
$\frac{5}{4}$-$\frac{5}{4}$+12=
12