Răspuns:
Explicație pas cu pas:
[tex]x^{2} -3x=0\\delta=b^{2}-4*a*c\\ delta=(-3)^{2}-4*1*0\\ delta=9\\x_{1/2}=\frac{-b+/-\sqrt{delta} }{2*a}\\x_{1/2} =\frac{-(-3)+/-\sqrt{9} }{2*1} \\ x_{1/2}=\frac{3+/-3}{2}\\x_{1}=\frac{3+3}{2}=3\\x_{2}=\frac{3-3}{2} =0[/tex]
