Matematyka

Autorzy:Dubiecka-Kruk Barbara, Dubiecka Anna, Bazyluk Anna

Wydawnictwo:WSiP

Rok wydania:2014

Oblicz. 4.6 gwiazdek na podstawie 5 opinii
  1. Gimnazjum
  2. 2 Klasa
  3. Matematyka

`a) \ (sqrt{81}-sqrt{64})*sqrt{5 1/16}=(9-8)*sqrt{81/16}=1*9/4=9/4=2 1/4` 
`ul(ul( \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ))` 

`b) \ (sqrt{1,21}+sqrt{3 1/16})/(sqrt{2,56}-sqrt{1 9/16})=(1,1+sqrt{49/16})/(1,6-sqrt{25/16})=(1,1+7/4)/(1,6-5/4)=(1,1+1 3/4)/(1,6-1 1/4)=(1,1+1,75)/(1,6-1,25)=(2,85)/(0,35)=`          
`\ \ \ =strike285^57/strike35^7=57/7=8 1/7` 
`ul(ul( \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ))` 


`c) \ (5sqrt{0,09}-3sqrt{0,04})*(2sqrt{2 1/4}-3sqrt{1 7/9})=(5*0,3-3*0,2)*(2*sqrt{9/4}-3sqrt{16/9})=` 
`\ \ \ =(1,5-0,6)*(strike2^1*3/strike2^1-strike3^1*4/strike3^1)=0,9*(3-4)=0,9*(-1)=-0,9` 
`ul(ul( \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ))` 


`d) \ root{3}{3 3/8}*root{3}{0,125}:(root{3}{64}:root{3}{8/27})=root{3}{27/8}*0,5:(4:2/3)=3/2*1/2:(strike4^2*3/strike2^1)=` 
`\ \ \ =3/4:6=strike3^1/4*1/strike6^2=1/8`