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Cum se rezolva cu delta 2x^2-6x?

Răspuns :

2x^2-6x=0 /÷2

x^2-3x=0

Delta=b^2-4ac=(-3)^2-4*1*0=9-0=9

x1,2=(-b+-rad delta)/2a=(3+-rad9)/2

x1=(3+3)/2=6/2=3

x2=(3-3)/2=0/2=0