Question 868794
x^2 + 4x - 5 = 0   |format ax^2 + bx + c
{{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
{{{x = (-4 +- sqrt( 16+20))/(2) }}}
{{{x = (-4 +- sqrt( 36))/(2) }}}
{{{x = (-4 +- 6)/(2) }}}
x = 2/2 =1  and x = -10/2 = -5