Solve the equation x2 – x + 2 = 0


Solve the equation $x^{2}-x+2=0$


The given quadratic equation is $x^{2}-x+2=0$

On comparing the given equation with $a x^{2}+b x+c=0$, we obtain

$a=1, b=-1$, and $c=2$

Therefore, the discriminant of the given equation is

$D=b^{2}-4 a c=(-1)^{2}-4 \times 1 \times 2=1-8=-7$

Therefore, the required solutions are

$\frac{-b \pm \sqrt{D}}{2 a}=\frac{-(-1) \pm \sqrt{-7}}{2 \times 1}=\frac{1 \pm \sqrt{7} i}{2}$ $[\sqrt{-1}=i]$

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