Matematyka

Autorzy:Wojciech Babiański, Lech Chańko, Joanna Czarnowska

Wydawnictwo:Nowa Era

Rok wydania:2015

Oblicz 4.14 gwiazdek na podstawie 7 opinii
  1. Liceum
  2. 1 Klasa
  3. Matematyka

`a)\ (8-(-2 1/2))/(1 4/5:14/15-2)=(8+2 1/2)/(9/5:14/15-2)=(10 1/2)/(9/strike5^1*strike15^3/14-2)=(10 1/2)/(27/14-28/14)=`

`\ \ \ \ =(21/2)/(-1/14)=21/2:(-1/14)=21/strike2^1*(-strike14^7/1)=-147`  

 

`b)\ (3/5:9/10-2 1/5:(-1,1))/((2 1/3-3/4)*2 2/5)=(strike3^1/5*10/strike9^3-11/5:(-11/10))/((2 4/12-9/12)*12/5)=(10/15-strike11^1/5*(-10/strike11^1))/((1 16/12-9/12)*12/5)=`

`\ \ \ \ =(10/15+10/5)/(1 7/12*12/5)=(2/3+2)/(19/strike12^1*strike12^1/5)=(2 2/3)/(19/5)=(8/3)/(19/5)=8/3:19/5=8/3*5/19=40/57`         

 

`c)\ (2 1/3-3 1/2)/3:(5/12-5/6)=(2 2/6-3 3/6)/3:(5/12-10/12)=(-(3 3/6-2 2/6))/3:(-5/12)=(-1 1/6)/3:(-5/12)=` 

` \ \ \ \  =(-7/6)/3:(-5/12)=(-7/6):3:(-5/12)=(-7/strike6^1)*1/3*(-strike12^2/5)=14/15`      

 

`d)\ 4/5-[((-2)^3)/(0,2)+(0,6)/(0,02):6/5]=4/5-[(-8)/(0,2)+strike60^10/2*5/strike6^1]=4/5-[(-80)/2+50/2]=`

`\ \ \ \ =4/5-[-40+25]=4/5-(-15)=4/5+15=15 4/5`   

 

`e)\ (-strike(4,5)^(0,5)*2/strike9^1-1,6)/(-0,6*(-1,5)-(4,4:0,4))=(-1-1,6)/(0,9-44:4)=(-2,6)/(0,9-11)=(-2,6)/(-10,1)=(2,6)/(10,1)=26/101` 

 

`f)\ 1/6*(-3)^2/(0,5)+(-2)^2/(0,3):(-1 7/9)=1/6*9/(0,5)+4/(0,3):(-16/9)=1/6*90/5+strike40^5/3*(-9/strike16^2)=` 

`\ \ \ \ =1/6*18-45/6=3-15/2=3-7 1/2=-4 1/2`