Question

Nu stiu cum se face...​

Answer 1

Răspuns:

Explicație pas cu pas:

x = (-1/3)^3 = -1/27

y = -11/6 + 7/9 = -33/18 + 14/18 = -19/18

opusul lui y este 19/18

-1/27 + 19/18 = -2/54 + 57/54 = 55/54 = 1 intreg si 1/54 (raspuns C)

Answer 2

x=(-1/3)³

x= -1/27

y= -1 5/6-(-7/9)

y= -11/6+7/9

y= -33/18+14/18

y= -19/18

x+(-y)=

=x-y=

= -1/27-(-19/18)=

= -1/27+19/18=

= -2/54+57/54=

=55/54= 1 1/54

C.1 1/54