let 'x' and 'y' be the numbers and let x>=y

the difference between two numbers is 5

x - y = 5

their product is 2.75

x*y = 2.75

by solving the system of equations

x - y = 5

x*y = 2.75

we find

Solution 1:

x = 5.5

y = 0.5

Solution 2:

x = - 0.5

y= - 5.5

there are 2 solutions, 2 pairs of numbers that satisfy the conditions:

first solution: 5.5 and 0.5

second solution: - 0.5 and - 5.5