Question

0,(6)+2•0,+3); (4+2³:4)•(-5)²•1,25; (-2)³•0,8+(-1) la puterea 2013; 1,0(5)•90-2³:(1\2)-³;

Answer 1

0,(6)=6/9=2/3
0,(3)=3/9=1/3

0,(6)+2•0,(3)=2/3+1/3=3/3=1
 
(4+2³:4)•(-5)²•1,25 =(4+2³:2²)•25•1,25 =(4+2)•25•1,25 =6•25•1,25 =187,5

 (-2)³•0,8+(-1)²⁰¹³ = -8•0,8-1 =-6,4-1=-7,4

1,0(5)=(105-10)/90=95/90=19/18
 1,0(5)•90-2³:(1\2)⁻³ = 19/18•90-2³:2³ =19•5-1=95-1=94