Предмет: Математика, автор: ivannageriluk59

1.Звести подібні доданки: 1) 9а + За

Ответы

Автор ответа: Kormash

3

1) 9а + 3а = 12а
_________

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3х2 – 2х4 – 1 = 0

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а) (7/11)×((10!)^2-(9!)^2)/((8!)^-(7!)^2);
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