Question

x(la patrat) -3x+2=0 . Rezolvați în R ecuatia .

Answer 1

  $x^{2} -3x+2=0$
Δ=$b^{2} -4ac$
Δ=9-(4*1*2)=9-8=1
$x_{1} = \frac{-b+ \sqrt{delta} }{2a}$
$x_{1} = \frac{3+1}{2} = \frac{4}{2} =2$
$x_{2} = \frac{-b- \sqrt{delta} }{2a}$
$x_{2} = \frac{3-1}{2} = \frac{2}{2} =1$