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Выполни умножение (13c−411d)⋅(13c+411d) .
Выбери правильный ответ:
19c2−16121d2
19c2−833cd+16121d2
19c2−2⋅13c⋅411d+16121d2
19c2+833cd+16121d2
19c2+2⋅13c⋅411d+16121d2
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