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Efectuati (explicati cum ati rezolvat) :
a) 3,75 : (-5) =?
b) 0,(8) x 3 =?
c) -1,26+1,4 =?
d) 0,(5)+0,(4)=?
e) [-0,(6)] la puterea a2a = ? . Multumesc.

Răspuns :

Mercelynoid
3,75= 375/100
375/100 : -5 = 375/100 *-1/5=-375/500=-75/100=-0.75
0,(8)*3=8/9*3=8/3=2intreg si 2/3
-1,26+1,4=0,14
0,(5)+0.(4)=5/9+4/9=9/9=1
-0(,6)^2=-6/9^2=-36/81


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