Question

What two numbers multiply into 30 but adds up to negative 11

Answer 1

-5 and -6
-5*-6 = 30, since the two factors are negative the answer is positive.
-5-6 = -11, -5-6 is the same as -5 + -6 which equals -11

Answer 2

-6 and -5 both add up to -11 and multiply to 30