Question

Two factors of 30 add up to 9

Answer 1

 6x5=30
3x10=30
6+3=9
Hope it helps

Answer 2

There is no such thing
maybe check and see if it's a -9 or -30 
or
you may need to use quadratic equation [$\frac{-b \frac{+}{-} \sqrt{b^{2} -4(a)(c)} }{2(a)}$ ] which I would help but I don't know the whole equation