Proszę o zrobienie pilne, na jutro !!!! najważniejsze 2,3 zadanie !! Proszę!!!

2. [latex]x= sqrt{1 frac{9}{16} }= sqrt{1+frac{9}{16} }=sqrt{ frac{16}{16}+frac{9}{16} }=sqrt{frac{16+9}{16} }=sqrt{frac{25}{16} }= frac{ sqrt{25} }{ sqrt{16} }= frac{5}{4}[/latex] [latex]y= sqrt{5frac{4}{9} }= sqrt{5+frac{4}{9} }=sqrt{ frac{45}{9}+frac{4}{9} }=sqrt{frac{45+4}{9} }=sqrt{frac{49}{9} }= frac{ sqrt{49} }{ sqrt{9} }= frac{7}{3}[/latex] [latex]x+y= frac{5}{4} + frac{7}{3} = frac{15}{12} + frac{28}{12} = frac{43}{12} =3 frac{7}{12}[/latex] [latex]x-y= frac{5}{4} - frac{7}{3} = frac{15}{12} - frac{28}{12} =- frac{13}{12} =-1 frac{1}{12}[/latex] [latex]y-x=frac{7}{3}-frac{5}{4}= frac{28}{12}-frac{15}{12} =frac{13}{12} =1 frac{1}{12}[/latex] [latex]xcdot y= frac{5}{4} cdot frac{7}{3} = frac{35}{12}=2frac{11}{12}[/latex] [latex]x: y= frac{5}{4} : frac{7}{3} = frac{5}{4} cdot frac{3}{7} = frac{15}{28}[/latex] [latex]y:x= frac{7}{3}:frac{5}{4} = frac{7}{3} cdot frac{4}{5} = frac{28}{15}=1frac{13}{15}[/latex] 3. [latex]7sqrt{5}+sqrt{20}=7sqrt{5}+sqrt{4cdot 5}=7sqrt{5}+sqrt{4}cdotsqrt{5}=7sqrt{5}+2cdotsqrt{5}=\\=7sqrt{5}+2sqrt{5}=9sqrt{5}[/latex] [latex]sqrt{48}-sqrt{12}=sqrt{16cdot3}-sqrt{4cdot 3}=[/latex] [latex]=sqrt{16}cdotsqrt{3}-sqrt{4}cdotsqrt{3}=4cdotsqrt{3}-2cdotsqrt{3}=4sqrt{3}-2sqrt{3}=2sqrt{3}[/latex] [latex]sqrt[3]{250}-sqrt[3]{16}=sqrt[3]{125cdot2}-sqrt[3]{8cdot 2}=[/latex] [latex]=sqrt[3]{125}cdotsqrt[3]{2}-sqrt[3]{8}cdotsqrt[3]{2}=5sqrt[3]{2}-2sqrt[3]{2}=3sqrt[3]{2}[/latex]

zad.2 suma x+y=2,24 róznica x-y= -0,74 iloraz x*y lyb y*x=0,50 iloczyn x:y=1,12 różnica y - x=0,74 iloraz y:x=1,99 zad.3 9 i pierwiatsek z 5 2 i pierwisatek z 3 3,78 zad.5 normalny- x ulgowy=60% * x = 0,6 * x = 30 zł wiec 0,6 *x = 30  /0,6 x= 50zł odp. cena normalnego k. wynosi 50 zł