What two numbers multiply into -40, add into -3
ab = -40 a = -40/b
a+b=-3
-40/b + b = -3
-40 + b^2 = -3b
b^2 +3b-40 = 0 Quadratic Formula show b = -5 or -8
then a = 2 or 5 The red numbers work
+36916 
