<PRE><B>Question 369361</B>
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&lt;p&gt; x^2 - 5x + 9 = 0
 {{{x = (-b +- sqrt(b^2 - 4 *a*c))/(2*a)}}}
{{{x = (-(-5) +- sqrt((-5)^2 - 4 *1*9))/(2*1)}}}
{{{x = (5 +- sqrt((25 - 36))/(2))}}}
{{{x = (5 +- sqrt((-9))/(2))}}}
{{{x = (5 +- (3i)/(2))}}}
So {{{x = (5-3i)/2}}} or {{{ x = (5 + 3i)/2}}} 
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