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rezolvati in R ecuatia : x(5x+2)=5x-3

Răspuns :

x(5x+2)=5x-3

5x^2+2x-5x+3=0

5x^2 -3x+3=0

D=3^2 -4*5*3=9-60=-51

D<0, rezulta ca ecuatia nu are solutii in R.

''D''=delta