Va rog frumos mă poate ajuta și pe mine cineva ?
Doar 11 și 14 .
Mulțumesc !
Răspunsuri la întrebare
a)3•(-8):(-4)=6
b)-1•(-2):1=2
c)-2•(-12):1=24
d)-8:(-2):2=2
e)-8:(-4)=2
f)1+(-4):(-1)=5
g)-3+(-2):(-1)=(-1)
h)0:(-9)=0
i)5-(-2):(-1)=3
j)3+(-3):1=0
14.
a•b-a•c=a•(b-c)=(-4)•8=(-32)
11 )
a ) 3 × ( - 6 - 8 + 5 + 1 ) : ( + 3 - 9 - 2 + 4 ) = 6
= 3 × ( - 14 + 6 ) : ( - 6 + 2 ) =
= 3 × ( - 8 ) : ( - 4 ) =
= - 24 : ( - 4 ) =
= 6
___________________
b)
- 1 × ( + 3 - 9 - 4 + 8 ) : ( - 5 + 4 - 2 + 4 ) = 2
= - 1 × ( - 6 + 4 ) : ( - 1 + 2 ) =
= - 1 × ( - 2 ) : 1 =
= + 2 : 1 =
= 2
________________________
c)
- 2 × ( - 8 + 7 - 6 - 5 ) : ( - 3 + 9 - 1 - 4 ) = 24
= - 2 × ( - 1 - 11 ) : ( 6 - 5 ) =
= - 2 × ( - 12 ) : 1 =
= + 24 : 1 =
= 24
______________________________
d)
( + 3 - 7 - 9 + 5 ) : ( - 6 - 2 + 5 + 1 ) : 2 = 4
= ( - 4 - 4 ) : ( - 8 + 6 ) : 2 =
= ( - 8 ) : ( - 2 ) : 2 =
= + 4 : 2 =
= 2
___________________
e )
- ( + 8 - 2 - 5 - 9 ) : ( - 7 - 2 + 4 + 1 ) = - 2
= - ( 6 - 14 ) : ( - 9 + 5 ) =
= - ( - 8 ) : ( - 4 ) =
= - 2
________________________
f )
1 + ( - 6 + 8 - 5 - 1 ) : ( - 2 + 3 + 4 - 6 ) = 5
= 1 + ( 2 - 6 ) : ( 1 - 2 ) =
= 1 - 4 : ( - 1 ) =
= 1 + 4 =
= 5
______________________
g)
- 3 + ( - 8 - 3 + 2 + 7 ) : ( + 9 - 6 - 8 + 4 ) = - 1
= - 3 + ( - 11 + 9 ) : ( 3 - 4 ) =
= - 3 + ( - 2 ) : ( - 1 ) =
= - 3 + 2 =
= - 1
______________________________
h )
( - 5 - 4 + 3 + 6 ) : ( - 7 + 2 - 8 + 4 ) = 0
= ( - 9 + 9 ) : ( - 5 - 4 ) =
= 0 : ( - 9 ) =
= 0
_____________________
j)
5 - ( -2 + 8 - 9 + 1 ) : ( - 5 - 4 + 7 + 1 ) = 3
= 5 - ( 6 - 8 ) : ( - 9 + 8 ) =
= 5 - ( - 2 ) : ( - 1 ) =
= 5 - 2 =
= 3
______________________
j )
3 + ( + 3 - 8 - 2 + 4 ) : ( - 1 - 6 + 3 + 5 ) =
= 3 + ( - 5 + 2 ) : ( - 7 + 8 ) =
= 3 - 3 : 1 =
= 3 - 3 =
= 0
________________________
14).
a = - 4 si b - c = 8
a · b - a · c = a · ( b - c ) = - 4 · 8 = - 32