1 - Determine as potencias:
a) (3am)²
b)(2/3)
c)
d)(m/2)
e)(2a/b)
f)(2/5)
2 - Aplique as propriedades da potenciação, escrevendo o resultado na forma de potencia:
a) 2³ X
b) X
c) 3 X
d) (1/2)² X (1/2)
e)3/3
Respostas
respondido por:
10
1.
a)
(3am)² = 3².a².m² = 9a²m²
*****************************
- 1
b) (2/3) = 3/2
*******************************
- 2 - 2
c) x = 1/x² ou x
*******************************
d)
- 3 3
(m/2) = (2/m) = 8/m³
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
e)
- 1 1
(2a/b) = (b/2a)
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
f)
- 2 2
(2/5) = (5/2)
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
2.
a)
3 - 5 3 + (-5) 3 - 5 - 2
2 . 2 = 2 = 2 = 2
********************
b)
- 4 - 2 - 4 +(- 2) - 4 - 2 - 6
3 . 3 = 3 = 3 = 3
***********************
c)
- 5 1 +(- 5) 1 - 5 - 4
3 . 3 = 3 = 3 = 3
*****************************
d)
2 - 2 2 + (- 2) 2 - 2 0
(1/2) . (1/2) = (1/2) = (1/2) = (1/2)
*************************
e)
5 8 5 - 8 - 3
3 : 3 = 3 = 3
a)
(3am)² = 3².a².m² = 9a²m²
*****************************
- 1
b) (2/3) = 3/2
*******************************
- 2 - 2
c) x = 1/x² ou x
*******************************
d)
- 3 3
(m/2) = (2/m) = 8/m³
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
e)
- 1 1
(2a/b) = (b/2a)
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
f)
- 2 2
(2/5) = (5/2)
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
2.
a)
3 - 5 3 + (-5) 3 - 5 - 2
2 . 2 = 2 = 2 = 2
********************
b)
- 4 - 2 - 4 +(- 2) - 4 - 2 - 6
3 . 3 = 3 = 3 = 3
***********************
c)
- 5 1 +(- 5) 1 - 5 - 4
3 . 3 = 3 = 3 = 3
*****************************
d)
2 - 2 2 + (- 2) 2 - 2 0
(1/2) . (1/2) = (1/2) = (1/2) = (1/2)
*************************
e)
5 8 5 - 8 - 3
3 : 3 = 3 = 3
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