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21.
a)
1
----- 4 . 1
2 -----
2 2
16 = 2 = 2 = 4
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b)
1
----- 2 . 1
2 ----
2 2/2 1
25 = 5 = 5 = 5 = 5
******************
c)
1 1
---- ------ 2 . 1
2 2 ----
2
36 = [ 6²] = 6 = 6
----- ------- ----- ------
49 [ 7²] 7 7
d) 1
1 ------ 1 1 1
------ 2 ------ . ----- -----
2 2 2 4
16 = 16 = 16
4 . 1
-----
4
2 = 2¹ = 2
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
22.
1
-----
2 2/2
7² = 7 = 7
************************************
b)
2
1/2 2/2
64 = 64 = 64
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
c)
1/2
4 4/2
a = a = a²
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
1/2 . 1/2 . 1/2 1/8 8 . 1/8 8/8
256 = 256 = 2 = 2 = 2
a)
1
----- 4 . 1
2 -----
2 2
16 = 2 = 2 = 4
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b)
1
----- 2 . 1
2 ----
2 2/2 1
25 = 5 = 5 = 5 = 5
******************
c)
1 1
---- ------ 2 . 1
2 2 ----
2
36 = [ 6²] = 6 = 6
----- ------- ----- ------
49 [ 7²] 7 7
d) 1
1 ------ 1 1 1
------ 2 ------ . ----- -----
2 2 2 4
16 = 16 = 16
4 . 1
-----
4
2 = 2¹ = 2
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
22.
1
-----
2 2/2
7² = 7 = 7
************************************
b)
2
1/2 2/2
64 = 64 = 64
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
c)
1/2
4 4/2
a = a = a²
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
1/2 . 1/2 . 1/2 1/8 8 . 1/8 8/8
256 = 256 = 2 = 2 = 2
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