1. 115 . 4950 .
2. :
1) . ?
2) . ?
3) . ?
4) D = FM . F, D = 10 .
II. .
1. 139 ( . 76) .
( )
1) = D , , = D. DF D, = , DF = D, , = DF.
2) D , =
= DF. , = DF = DF. , = DF,
= DF = D , , = DF .
2. 169 ( . 95) . ( ) : , ( ) , . , . D, D = = . D, , F, .
FE . FE .
3. 176* .
: = 1 1 1; = 1 1; = 1 1; = 1 1.
1 1 .
: = 1 1 1.
D = ; 1 D 1 = 1 1 D; 1 D 1.
1) D = , D = ; D = 4.
1 1 D 1 = 1 1 1, 1 D 1 = 1 1; D 1 = 2.
, D = 1 D 1.
2) D = 1 1 D 1 , 3 = 1, D =
= D 1, , 4 = 2.
3) = 1, = 4 + 3 = 2 + 1 = 1. , = 1 1 1 .
III. .
I
. 1 | 1. D 1, = D, = D. , D = 3 , = 4 , = 5 . |
. 2 | 2. 2 = D, = = D. , D. |
II
. 3 | 1. N N 3, N = N, NO N. NO, N = 28, N = 42, N = 110. |
|
|
. 4 | 2. 4 D = D, = = . , D . |
IV. .
: 1620 2 3; 140; 172.
: ; , ; .