20
The negative factor pairs of 60 are (-60, -1) (-30, -2) (-20, -3) (-15, -4) (-12, -5) (-10, -6)
None of them add up to -40. No integers satisfy your request.
-34
-37
360
no 3 numbers add to equal 10 and multiply to equal 40.
18
There are no two real numbers that do. Using complex numbers, these two do: (-3/2 + i√151/2) & (-3/2 - i√151/2) Two numbers that add to -3 and multiply to -40 are -8 & 5 Two numbers that add to 3 and multiply to -40 are 8 & -5 Two complex numbers that add to 3 and multiply to 40 are (3/2 + i√151/2) & (3/2 - i√151/2)
27
-34
They are 40 and 40
1680
-452
260
51
18
-2.7178 and 14.7178 (approx)
-43
-22