Réponses

2014-03-21T02:46:10+01:00


1-1/x = 4*(x²-2) / x* (4x +8)

(1-1/x) ( 4x² + 8x) = 4x² - 8

4 x² +8x - 4x - 8 - 4x² + 8 = 0

4x = 0

x= 0