Question

Выполнить действия а,б,в Срочно даю 99 Балов

Answer 1

1. ((x-x+1)/(x-1))*(y(x-1)/x)=y/x; 2. a/b-((a-b)(a+b)/b^2)*(b/(a+b))=a/b-(a-b)/b=-1; 3. ((y^2+6y+9-y^2+6y-9)/(y-3)(y+3))*((y+3)(y+3)/12y)=(y+3)/(y-3)