Răspunsuri

2014-07-25T15:23:46+03:00
A)  (5/12-7/24):_-7/18+11/36)*8*9/3=
=(10/24-7/24):(-14/36+11/36)*24=
=3/24:3/36*24=
=3*36/3=36

b)[(- 1/2: 10^-1 +0,04: 10^-2 ] ^32 :[-0,0(3)]^2 =
=[(- 1/2 *10 +4/100*10^2 ] ^{32} :[- 3/90 ]^2 =
=(- 5+4) ^32 *[- 90/3 ]^{2} =
=(- 30)^{2} =900

c)[(3/25-1,5)*1,(6)+(0,1(6)+2 4/5)]:0,(074)=
=[(3/25-15/10)*15/9+(15/90+14/5)]:74/999=
=[(6/50-75/50)*15/9+(1/6+14/5)]:74/999=
=[-69/50*5/3+(5/50+84/30)]:74/999=
=(-69/10*1/3+89/30):74/999=
=(-69/30+89/30)*999/74=
=20/30*999/74=2/3*999/74=333/37= 9

d) (-0.2)^-1*10^-2+0.125:10^-1-0.1(6)*3.6=
=-10/2*1/100+125/1000*10-15/90*36/10=
=- 5/100+125/100-6/10=
= 120/100- 6/10=
=12/10-6/10= 6/10 =3/5