Определи, является ли тождеством равенство 5p−qpq−1p+q⋅(pq−qp)=4q.

После преобразования левой части получим выражение

(выбери правильный ответ):​

И так, дано вот это и потом ... множим на 2._________
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Я не знаю как это решать
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