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Aduceti la acelasi numitor rapoartele x la puterea 2 /x+1 si x/x la puterea 2-1`
dau coronita
pls


Răspuns :

x patrat/x+1 plus x/xpatrat-1 egal x patrat(x-1)/(x+1)(x-1) + x/(x+1)(x-1) egal x patrat/x+1 + x/(x+1)(x-1)