Question 292383
We'll use the Quadratic formula of {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} <br>

We're looking for the <i>discriminant</i> which is {{{ b^2-4*a*c }}} or, in our particular case: <br>
{{{ (-3)^2-4*(1)*(5) }}} Now we'll do the math: <br>
{{{ (-3)^2-4*(1)*(5) }}} 9 - 4 * 5 = 9 - 20 = -11 <br>
Your lesson should have said something about negative discriminants, so I'll let you continue from here & bob's your uncle!