Question

сократите дробь: (x+y)^2-(x-y)^2/x

Answer 1

 (x+y)^2-(x-y)^2/x=ху²
числитель
(x+y)^2-(x-y)^2=(х+у-(х-у))(х+у+(х-у))=
=(х+у-х+у)(х+у+х-у)=х²у²


х²у²/х=ху²