Question 41899
Comparing the given equation {{{3x^2 - hx + 9 = 0}}} with the standard quadratic equation {{{ax^2+bx+c=0}}} we find a = 3, b = -h, c = 9.


Let A and B be the roots of this equation.
Then, sum of the roots: A + B = {{{-b/a = h/3}}}.
But, given that sum of the roots = -4.
So {{{h/3 = -4}}}
or h = -12