Answer:
-8 (or) 5 and 5 (or) -8
Explanation:
Let one of the numbers = x
Let other number = y
As the sum of two numbers = -3
x + y = -3
x = -3-y
As the the result of multiplication = -40
xy = -40
(-3-y)*y = -40
-3y-y² = -40
-y²-3y+40 = 0
-(y²+3y-40) = 0
-(y+8)(y-5) = 0
(-y-8)(y-5) = 0
-y-8 = 0 (or) y-5 = 0
-y = 8 (or) y = 5
y = -8 (or) y = 5
when y = -8
x = -3-y
x = -3-(-8)
x = -3+8
x = 5
when y = 5
x = -3-y
x = -3-5
x = -8