Question

4.Efectuati:

A) 8-{10,46-[2,1+(4.42-2.4)*10]:5};
B) 2,3+{0,3*[0,2+(4,8-4,8)*10 la puterea a 3-a]:0,06}*0,7;
C) 14,5-0,5*{7,2:1,2+2[8,5+(3,8+4,7)*0]};
D) 5,5*{2,4+2,5*[15,04-4(2,06:1,4*1,4-0,06*3,5:3,5)]}:
E) 0,2*{4,6*[7,2*(9,4-3,8):0,56]:3,6}:0,23;
F) [(3,42*10-4,8:0,4)*0,5-3,5*9]:1,59;
G) {6,25:0,5 la puterea a 2-a -[8,4-0,6(8,2-0,8*4):0,6]}*0,5;
H) 10 la puterea a 2-a *{1,3*[8,2-6,3:(8,3*0,1+7*0,1 la puterea a 2-a)]+10,04
Va rog rezolvare !

Answer 1

A) 8-{10,46-[2,1+(4.42-2.4)*10]:5}=
=8-[10,46-(2,1+2.02*10):5}=
=8-[10,46-(2,1+20,2):5}=
=8-(10,46-22,3:5)=
=8-(10,46-4,46)=
=8-6=2

 B) 2,3+{0,3*[0,2+(4,8-4,8)*10³]:0,06}*0,7=
=2,3+[0,3*(0,2+0*10³):0,06]*0,7=
=2,3+(0,3*0,2:0,06)*0,7=
=2,3+1*0,7=3

C) 14,5-0,5*{7,2:1,2+2*[8,5+(3,8+4,7)*0]}=
=14,5-0,5*[6+2*(8,5+0)]=
=14,5-0,5*(6+17)=
=14,5-0,5*23=
=14,5-11,5=3

 D) 5,5*{2,4+2,5*[15,04-4*(2,06:1,4*1,4-0,06*3,5:3,5)]}=
=5,5*{2,4+2,5*[15,04-4*(2,06-0,06)]}=
=5,5*[2,4+2,5*(15,04-4*2)]=
=5,5*(2,4+2,5*7,04)=
=5,5*(2,4+17,6)=
=5,5*20=110


 E) 0,2*{4,6*[7,2*(9,4-3,8):0,56]:3,6}:0,23=
=0,2*[4,6*(7,2*5,6:0,56):3,6]:0,23=
=0,2*[4,6*(7,2*10):3,6]:0,23=
=0,2*(4,6*72:3,6):0,23=
=0,2*(4,6*20):0,23=
=0,2*9,2:0,23=
=1,84:0,23=8

 F) [(3,42*10-4,8:0,4)*0,5-3,5*9]:1,59=
=[(34,2-12)*0,5-31,5]:1,59=
=(22,2*0,5-31,5):1,59=
=(11,1-31,5):1,59=
=-20,4:1,59= 12,8301886.... (probabil e ceva scris gresit in exercitiu)


 G) {6,25:0,5² -[8,4-0,6*(8,2-0,8*4):0,6]}*0,5=
={6,25:0,25 -[8,4-0,6*(8,2-3,2):0,6]}*0,5=
=[25 -(8,4-0,6*5:0,6)]*0,5=
=[25 -(8,4-5)]*0,5=
=(25 -3,4)*0,5=
=21,6*0,5=
=10,8




H) 10² *{1,3*[8,2-6,3:(8,3*0,1+7*0,1²)]+10,04}=
=100 *{1,3*[8,2-6,3:(0,83+0,07)]+10,04}=
=100 *[1,3*(8,2-6,3:0,9)+10,04]=
=100 *[1,3*(8,2-7)+10,04]=
=100 *(1,3*1,2+10,04)=
=100 *(1,56+10,04)=
=100*11,6=1160