Question

(-8)2 e (+4)3 e -3/2+2/5 e -1,5+3

Answer 1

a) (-8)2 = (-8)+2 = -6

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b) (+4)3 = 7

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c)

-3 + 2 . . . ........MMC
---- ---- = . . . ....2,5 .2
2 . 5 . . ............ 1,5 .5x
............................1,1 . ----
. . . . ...........................10
15+4 ...... 19
-------- = -----
10 ........... 10

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d) -1,3 + 3 = 1.2

1,3
- 1
-----
1,2