👤

calculati
a)
[0,1(6)] totul la2
b)
[-0,8(3)] totul la 2
c )
[0,2(6)] toul la 2
d)
[-0,(6)] totul la 3
e)
[1,(3)] totul la 3
f)
[-1,(6)] totul la 3


Răspuns :

a) 0,1(6) = (16 - 1)/90 = 15/90 = 3/18 = 1/6
[0,1(6)]^2 = 1/36

b) -0,8(3) = -(83 -8)/90 = -75/90 = -15/18 = -5/6
[-0,8(3)]^2 = 25/36

c) [0,2(6)]^2 = [(26 - 2)/90]^2 = (24/90)^2 = (4/15)^2 = 16/225

d) (-2/3)^3 = 8/27

e) [(13 -1)/9]^3 = (4/3)^3 = 64/27

f) [-(16 - 1)/9]^3 = (-5/3)^3 = - 125/27