Question

MA POATE AJUTA CINEVA?
DACA X+1SUPRAX=5,ATUNCI:
X PATRAT + 1 SUPRA X PATRAT=?

Answer 1

x+1/x=5, scadem numitorul x+1-x/x=5-1/1=>1/x=4=>x=1/4 =>x patrat+1/x patrat=1/16+1//1/16=> adcem la acelasi numitor la numaratorul fractiei mari=> 17/16//1/16=17/16*16/1=17.