Выполни умножение (1/2c−2/11d)⋅(1/2c+2/11d) .
Выбери правильный ответ:
14c2−2⋅12c⋅211d+4121d2
14c2−422cd+4121d2
14c2+422cd+4121d2
14c2−4121d2
14c2+2⋅12c⋅211d+4121d2

/-это дробная черта(одна вторая) ​
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