Question 136274
a^2+6a+5=0
{{{a = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}} 
a=(-6+-sqrt[6^2-4*1+5])/2*1
a=(-6+-sqrt[36-20])/2
a=(-6+-sqrt16)/2
a=(-6+-4)/2
a=(-6+4)/2
a=-2/2
a=-1 answer.
a=(-6-4)/2
a=-10/2
a=-5 answer.