Calcule as expressões:
(-1/2) elevado a 3 +1 =
(2/5)elevd a 2 - (-1/2)elevd a 3
2+ (-1/3)elvd a 2 - 1/2
1+(+2/5) - (1/2)elevd a 2
(5- 1/3)elevd a 2 + (3+1/2) elevd a 2
ajud ai gnt pfv
Respostas
respondido por:
4
Adicional:
(-1/2)² + 2/5
(- 1)² + 2 = 1 + 2 = 5.1 + 4.2 = 5 + 8 = 13
( 2) 5 4 5 20 20 20
********************
20: 4 = 5.1 = 5
20:5 = 4.2 = 8
****************************
mmc( 4,5) = 20
4,5: 2
2,5: 2
1,5: 5
1,1 = 2.2.5 = 4.5 = 20
------------------------------------------------------
a)
(-1/2)³ + 1
(- 1)³ + 1 = - 1 + 1 = - 1 + 8 = 7
( 2) 8 8 8
R.: 7/8
________________________________________
b)
(2/5)² - (-1/2)³
(2)² - ( 1)³ = 4 - 1 = 8.4 - 1.25 = 32 - 25 = 7
(5) ( 2) 25 8 200 200 200
R.: 7/200
******************************************************************
mmc (25,8) = 200
25,8: 2
25,4: 2
25,2: 2
25,1: 5
5,1: 5
1,1 = 2.2.2.5.5 = 8.25 = 200
-------------------------------------------------------------------------
c)
2+ (-1/3)² - 1/2
2 + ( - 1)² - 1
3 2
2 + 1 - 1
9 2
mmc (9,2) = 18
18.2 + 2.1 - 9.1 = 36 + 2 - 9 = 38 - 9 = 29
18 9 9 9
R.: 29/9
---------------------------------------------------
d)
1+(+2/5) - (1/2)²
1 + 2 - 1
5 4
20 + 4.2 - 5.1 = 20 + 8 - 5 = 28 - 5 = 23
20 20 20 20
R.: 23/20
**************
mmc (4,5) = 20
-----------------------------------------------
e)
(5 - 1/3)² + (3+1/2)²
(5 - 1)² + (3 + 1)²
3 2
(3.5 - 1)² + (2.3 + 1)²
2 2
(15 - 1)² + ( 6 + 1)²
2 2
(14)² + (7)²
( 2 ) (2)
7² + 49
4
49 + 49 = 4.49 + 49 = 196 + 49 = 245
4 4 4 4
Resp.: 245/4
(-1/2)² + 2/5
(- 1)² + 2 = 1 + 2 = 5.1 + 4.2 = 5 + 8 = 13
( 2) 5 4 5 20 20 20
********************
20: 4 = 5.1 = 5
20:5 = 4.2 = 8
****************************
mmc( 4,5) = 20
4,5: 2
2,5: 2
1,5: 5
1,1 = 2.2.5 = 4.5 = 20
------------------------------------------------------
a)
(-1/2)³ + 1
(- 1)³ + 1 = - 1 + 1 = - 1 + 8 = 7
( 2) 8 8 8
R.: 7/8
________________________________________
b)
(2/5)² - (-1/2)³
(2)² - ( 1)³ = 4 - 1 = 8.4 - 1.25 = 32 - 25 = 7
(5) ( 2) 25 8 200 200 200
R.: 7/200
******************************************************************
mmc (25,8) = 200
25,8: 2
25,4: 2
25,2: 2
25,1: 5
5,1: 5
1,1 = 2.2.2.5.5 = 8.25 = 200
-------------------------------------------------------------------------
c)
2+ (-1/3)² - 1/2
2 + ( - 1)² - 1
3 2
2 + 1 - 1
9 2
mmc (9,2) = 18
18.2 + 2.1 - 9.1 = 36 + 2 - 9 = 38 - 9 = 29
18 9 9 9
R.: 29/9
---------------------------------------------------
d)
1+(+2/5) - (1/2)²
1 + 2 - 1
5 4
20 + 4.2 - 5.1 = 20 + 8 - 5 = 28 - 5 = 23
20 20 20 20
R.: 23/20
**************
mmc (4,5) = 20
-----------------------------------------------
e)
(5 - 1/3)² + (3+1/2)²
(5 - 1)² + (3 + 1)²
3 2
(3.5 - 1)² + (2.3 + 1)²
2 2
(15 - 1)² + ( 6 + 1)²
2 2
(14)² + (7)²
( 2 ) (2)
7² + 49
4
49 + 49 = 4.49 + 49 = 196 + 49 = 245
4 4 4 4
Resp.: 245/4
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