Question 191250
set y=0
:
a){{{x^2+5x+4=0}}}
:
{{{(x+4)(x+1)=0}}} x=-4 and -1 (-4,0), (-1,0)
:
b){{{x^2+4x+5=0}}}
:
*[invoke solve_quadratic_equation 1, 4, 5]