,
a + a + a + a,
:
a + a + a + a = 4a.
,
:
x x x x x = x
y y y = y
a n, 1, n , a:
an =
an:
- ( )
- n ( )
:
25 = 22222 = 32,
:
2 ,
5 ,
32
, .
. 0n= 0
1, 1n= 1
1 : .
0 1, , 0
. . , , , ( ) , , ( ).
, . .
, ,
(2) = (-2)*(-2)= 4, (3) = 81,
(2) = (-2)*(-2)*(-2)= 8, (3) = 27.
!
, , (−5)4 −54 . .
(−5)4 .
−54, 2 :
1. 5.
54= 5 5 5 5 = 625
2. ( ).
−54= −625
2 = (2*2)=- 4, (2) = 4.
9 2 = 9- (2*2)= 5, -9 +(2) = -(9*9)+ (-2)*(-2)=-81+4=-77.
,
.
1- , . a , n m : . , |
2- , . a ≠ 0, n k n > k ( ), : ( ), n=k ( ), |
. , , , |
3- . a , n k : . |
|
|
.