Question

A- [(1/2)²+(1/2)³]:(1-1/4)=


B- √(1-1/3)-2/9=


C= 1+ {15/4 - [(1/2)²: ( 1²+3/4)]}=

Answer 1

A)[(1/2)²  +  (1/2)³  ] :  ( 1 - 1/4 ) =
[1/4   + 1/8]  :   (4/4 - 1/4) = 
[2/8  + 1/8 ]  :  (3/4 ) = 
3/8    :    3/4 = 
3/8 X 4/3 = 12/24 = 1/2

B)√(1 - 1/3) - 2/9 = √(3/3 - 1/3) - 2/9 = √2/3 - 2/9 = √√6/9 - 2/9 = √4/9 = 2/3

C) 1 + {15/4 - [(1/2)²  :  (1² + 3/4 )]} = 
     1 + {15/4 - [1/4  :  (1 + 3/4)]] =
     1 + {15/4 - [1/4 :  (4/4 + 3/4 )]} = 
     1 + {15/4 - [1/4 : 7/4)]} = 
    
    1 + {15/4  - {1/4 X 4/7)]} = 

     1 + {15/4  - 1/7}=
     1 + {105/28 - 4/28} = 
     1 + {101/28} = 
     1 + 101/28 = 28/28 + 101/28 = 129/28