Write two numbers that multiply to the value on top and add to the value on the bottom

A * b = -70
a + b = -9a = -9 - b

b(-9 - b) = -70
-b^2 - 9b + 70 = 0
(-b + 5)(b + 14) = 0

-b + 5 = 0
5 = b

b + 14 = 0
b = -14

ur numbers are -14 and 5

-14 * 5 = -70
-14 + 5 = -9