Question 872005
{{{x^2-4x+40=0}}}
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{x = (4 +- sqrt( (-4)^2-4*1*40 ))/(2*1) }}}
{{{x = (4 +- sqrt( 16-160 ))/(2) }}}
{{{x = (4 +- sqrt( -144 ))/(2) }}}
You cannot find the square root of a negative number.
<h3>NO SOLUTIONS</h3>