-8 and -7,because when you add those two numbers,you get -15 because their both negative numbers,and iff you multiply them,they equal 56 because negative times a negative equals a positive.ur welcome!:)
-8 and -7, I used guess and check
The two numbers that add up to -15 and multiply to get 56 are -8 and -7. Adding these numbers results in -15, and multiplying them gives 56. This can be confirmed using the equations derived from the problem.
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