Выполни умножение (1\7x−2\11y)⋅(1\7x+2\11y) .
Выбери правильный ответ:
1\49x2−2⋅17x⋅2\11y+4\121y2
1\49x2−4\121y2
1\49x2−4\77xy+4\121y2
1\49x2+2⋅1\7x⋅2\11y+4\121y2
1\49x2+4\77xy+4\121y2
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