Question 94102
ax^2+bx+c=0 is the standard form of the quadratic equation. 
x^2+3x=0
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
x=(-3+-sqrt[3^2-4*1*0])/2*1
x=(-3+-sqrt9-0)/2
x=(-3+-sqrt9)/2
x=(-3+-3)/2
x=(-3+3)/2 
x=0/2
x=0 answer
x=(-3-3)/2
x=-6/2
x=-3 answer.