Răspuns:
7.
a. (4+3)³-(4-3)¹⁰=.
7³-(4+3)¹⁰=.
73-1¹⁰=
343-1¹⁰=
343-1=
=342.
b.(10³-125•2³):123¹²³=
(10³-5³•2³):123¹²³=
(10³-10³):123¹²³=
0:123¹²³=
=0.
c.[(10³:5²:8+3²•5²)•2¹=
[(1000:25:8+9•25):1]•2=
[(5+225):1]•2=
(230:1)•2=
230•2=
=460.
d.{[(12²+5²):13]²-2⁷-2⁰}:2³=
{[(144+25):13]²-128-1}:8=
[(169:13)²-128-1]:8=
(13²-128-1):8=
(169-128-1):8=
40:8
=5
Sper că te-am ajutat....
