Call the asked-for numbers a and b. From the problem statement, a X b = -60 and a + b = -4. From the second of these equations, a = -4 - b. Substituting this expression in the first equation yields (-4 - b)b = -60 = -4b - b2. Rearranging this equation to standard quadratic form yields b2 - 4b - 60 = 0, which can be factored into (b + 10)(b - 6) = 0, which is true when b is either -10 or +6. These latter two numbers are the answer to the problem.
(20) and (negative 3)
44
To find two numbers that add up to -60 and multiply to 36, we can set up a system of equations. Let's call the two numbers x and y. The sum of the numbers is x + y = -60, and the product of the numbers is xy = 36. By solving these equations simultaneously, we find that the two numbers are -12 and -48.
-56
8 and -60
-1540
60 AND 15
-12 and +5
8.81 and -6.81
-58.2843 and -1.7157 (approx).
-71
71