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Rezolvati in R ecuatia: a roog, dau coroana la orice raspuns corect
a) [tex] \frac{3 x^{2} }{ x^{2} -2x+1} - \frac{5x}{x-1} +2=0[/tex]

b)[tex] \frac{2x}{ x^{2} -16} - \frac{3}{x+4} = \frac{5-x}{x-4} [/tex]