Question

calculati va rog frumos

Answer 1

a) (6-2/3)^2*18/8=
6^2-2^2/3^2*18/8=
36-4/9*18/8=
Acum se simplifica 4 cu 8 si 9 cu 18
36-1/1=36-1=35
b) (-2/3)^2*[0,(3)+1/2:(-0,75)]
(-2^2/3^2)*[3/9+1/2:(-75/100)]
-4/6*[3/9+1/2*(-100/75)]
Se simplifica 2 cu 100
Ne ramane  -4/6*[3/9+1*(-50/75)
Se simplifica fractia -50/75 prin 25 si ramane -2/3
-4/6*[3/9+1*(-2/3)]
-4/6*[3/9*(-2/3)
se simplifica 3 cu 3
-4/6*[1/9*(-2)]
-4/6*(-2/9)
Se simplifica 6 cu 2
-4/3*(-1/9)=4/27
/=linie de fractie
^=la puterea
*=semn de inmultire