THe two values of x that satisfy x^2 + bx + c = 0, for integers b and c are x = 6 and x = -4. Find b.
Since, x = 6 and x = - 4 are roots.....we must have that
(x - 6) ( x + 4) = 0 expand
x^2 - 6x + 4x - 24 = 0
x^2 - 2x - 24 = 0
So
b = -2