Matematyka

Autorzy:Wojciech Babiański, Lech Chańko, Joanna Czarnowska

Wydawnictwo:Nowa Era

Rok wydania:2015

Oblicz 4.5 gwiazdek na podstawie 6 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)\ 1 2/3-(2 1/3-3 1/2)/3:(5/12-5/6)=1 2/3-(2 2/6-3 3/6)/3:(5/12-10/12)=` 

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

`\ \ \ =1 2/3-(-7/6)/3:(-5/12)=1 2/3+(7/6)/3*(-12/5)=1 2/3+7/6:3*(-12/5)=` 

`\ \ \ =1 2/3+7/strike6^1*1/3*(-strike12^2/5)=1 2/3-14/15=1 10/15-14/15=25/15-14/15=11/15`      

 

 

`d)\ 4/5-[(-2)^3/(0,2)+(0,6)/(0,02):6/5]*0,2=4/5-[(-8)/(0,2)+60/2:6/5]*0,2=` 

`\ \ \ =4/5-[-80/2+strike30^5*5/strike6^1]*0,2=4/5-[-40+25]*0,2=` 

`\ \ \ =4/5-(-15)*0,2=4/5+3=3 4/5`     

 

 

`e)\ (-strike(4,5)^(0,5)*2/strike9^1+(-12,8)*(1/2)^3)/(-0,6*(-1,5)-(4,4:0,4)):3 1/4=(-1-12,8*1/8)/(0,9-44:4):3 1/4=` 

`\ \ \ =(-1-(12,8)/8)/(0,9-11):13/4=(-1-128/80)/(-10,1)*4/13=(-1-16/10)/(-10,1)*4/13=` 

`\ \ \ =(-1-8/5)/(-101/10)*4/13=(-5/5-8/5):(-101/10)*4/13=` 

`\ \ \ =(-strike13^1/strike5^1)*(-strike10^2/101)*4/strike13^1=8/101`           

 

`f)\ 1/6*(-3)^2/(0,5)+(-2)^2/(0,3):(-1 7/9)-1,5=1/strike6^2*strike9^3/(0,5)+4/(0,3):(-16/9)-1,5=` 

`\ \ \ =3/1+strike40^5/strike3^1*(-strike9^3/strike16^2)-1,5=3-15/2-1,5=3-7,5-1,5=3-9=-6`