What do you add to get -9 but multiply to get -36?

Those numbers are -12 and 3

Step-by-step explanation:

First list the factors of -36

-36 = +/- 1, 2, 3, 4, 6, 9, 12, 18, and 36

Second figure out the two numbers that add up to be -9

But remember one number must be positive and the other negative.

Since one positive and negative equal a negative number

However, two negatives equal a positive

Those numbers are -12 and 3

I hope this helped :)