Ответ:
4
Объяснение:
((х+1)/(х-1) - (х-1)/(х+1)) : х/(х²-1) = ((х+1)²-(х-1)²)/(х²-1) * (х²-1)/х =
= (х²+2х+1-х²+2х-1)/х = 4х/х = 4.
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Ответ:
4
Объяснение:
((х+1)/(х-1) - (х-1)/(х+1)) : х/(х²-1) = ((х+1)²-(х-1)²)/(х²-1) * (х²-1)/х =
= (х²+2х+1-х²+2х-1)/х = 4х/х = 4.