Х - y^2•( X + y )
X = - 1 ( 1/2 )
y = 2/3
Решение
1) - 1 ( 1/2 ) + ( 2/3 ) = - 1 ( 3/6 ) + ( 4/6 ) = - ( 9/6 ) + ( 4/6 ) = - 5/6
2) ( 2/3)^2 •( - 5/6 ) = 4/9 • ( - 5/6 ) = - 20/54 = - 10/27
3) - 1 ( 1/2 ) - ( - 10/27 ) = - 1 ( 27/54 ) + ( 20/54 ) = - 1 ( 7/54 )
Ответ ( - 1 ( 7/54 ))