Question

calculati:
1) a)-3•[1-3•(-3+2•5)]
b) -5•[-1+2•(-7+3•5)+6]
c) -1•[-8•(-3+2•4)+6]-11
d) -2•[-5-1•(-3+2•1)]-7•(-1)

2)Calculati a-b-c+d, daca:
a=-3-(-4)+(-5)-(-3)-(+2)
b=-4+(-1)-(-2)-(-6)+(-4)
c=-6+(-3)-5-3+(-5)-(-4)
d=-3+(-8)-(-2)-(+11)-(-6)

Answer 1

1) a) =-3•[-2•7]=-42
b) -5[1•8+6]=-70
c)-1•[-8•5+6]-11=34
d)-2•(-6)•(-1)=12
2)a=-3+4-5+3-2=-1
b=-4-1+2+6-4=-1
c=-6-3-5-3-5+4=-9-8-1=-9-9=-18
d=-3-8+2-11+6=-11+2-11+6=-22+8=-14
a-b-c+d=-1+1+18+14=32

Answer 2

1. a) -3*[1-3*(-3+10)]=
= -3*(1-3*7)=
= -3*(1-21)=
= -3*(-20)=
= 60
b) -5*[-1+2*(-7+15)+6]=
= -5*(-1+2*8+6)=
= -5*(-1+16+6)=
= -5*(15+6)=
= -5*21
= -105
c) -1*[-8*(-3+8)+6]-11=
= -1*(-8*5+6)-11=
= -1*(-40+6)-11=
= -1*(-34)-11=
= 34-11=
= 23
d) -2*[-5-1*(-3+2)]-7*(-1)=
= -2*(-5-1*(-1)+7=
= -2*(-5+1)+7=
= -2*(-4)+7=
= 8+7=
= 15

2.
a= -3-(-4)+(-5)-(-3)-(+2)
a= -3+4-5+3-2
a= -3

b= -4+(-1)-(-2)-(-6)+(-4)
b= -4-1+2+6-4
b= -1

c= -6+(-3)-5-3+(-5)-(-4)
c= -6-3-5-3-5+4
c= -18

d= -3+(-8)-(-2)+(-11)-(-6)
d= -3-8+2-11+6
d= -14

a+b+c+d= -3+(-1)+(-18)+(-14)= -3-1-18-14=-36

sper ca ai inteles :)