Question

Сколько будет , (-1\2)в третий степени =


И (2 11\12 - 4 5\18) * (-1 2\7) - (-3\4)во второй степени =

Answer 1

( - 1/2 ) ³ = ( - 1/8 ) 
---------------------------
( 2 ( 11/12 ) - 4 ( 5/18 ) ) * ( - 1 ( 2/7 )) - ( - 3/4 ) ² = 

1) 2 ( 11/12 ) - 4 ( 5/18 ) = 2 ( 33/36 ) - 4 ( 10/36 ) = 2 ( 33/36 ) - 3 ( 46/36 ) =
= - 1 ( 13/36 ) 
2) - 1 ( 13/36 ) * ( - 1 ( 2/7 )) = + ( 49/36 ) * ( 9/7 ) = 7/4 
3) ( - 3/4 )² = 9/16 
4) ( 7/4 ) - ( 9/16 ) = ( 28/16 ) - ( 9/16 ) = 19/16 = 1 ( 3/16 )

Ответ 1 ( 3/16 )