Question 1100959
{{{x^2-4x+5=0}}}


{{{x=(4+- sqrt(16-4*5))/2}}}


{{{x=(4+- sqrt(-4))/2}}}


{{{x=(4+- 2sqrt(-1))/2}}}


{{{x=2+- sqrt(-1)}}}


{{{highlight_green(x=2+- i)}}}




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Did you also want help with {{{x^2-x+5=0}}} ?
You can use the same method as above, which was the general solution of a quadratic equation.  Just follow the formula and simplify.
{{{x=(1+- sqrt((-1)^2-4*1*5))/2}}}