To find two numbers that multiply to -40 and add up to 18, we can set up a system of equations. Let's call the two numbers x and y. We have the equations xy = -40 and x + y = 18. By solving these equations simultaneously, we can find that the two numbers are 20 and -2. This is because 20*(-2) = -40 and 20 + (-2) = 18.
-1
-1
18
9
56
-1 and 18
-20
113
9 and -2
132
-257
4005