Ответ:
(х-у)(у-х)= -х²+2ху-у²
Объяснение:
(х-у)(у-х)=
=(х-у)×(-(х-у))=
= -(х-у)²=
= -(х²-2ху+у²)=
= -х²+2ху-у²
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Ответ:
Verified answer
Ответ:
(х-у)(у-х)= -х²+2ху-у²
Объяснение:
(х-у)(у-х)=
=(х-у)×(-(х-у))=
= -(х-у)²=
= -(х²-2ху+у²)=
= -х²+2ху-у²