2 numbers that add up makes 5 but multiplied makes -36
Let the first number be x and the second number be y. We're given two equations:
x + y = 5
xy = -36
Rearrange equation (1) by subtracting y from each side:
x = 5 - y
xy = -36
Substitute equation (1) for x into equation (2):
(5 - y)y =...