If the sum of the two numbers is 22 and the sum of their squares is 404, then the product of the numbers is:
40
44
80
88
Explanation:
Let the numbers be x and y.
Then, (x + y) = 22 and x2 + y2 = 404
Now,
2xy = (x + y)2 - (x2 + y2)
2xy= 222 - 404 = 484 - 404 = 80
xy = 40
Let the numbers be x and y.
Then, (x + y) = 22 and x2 + y2 = 404
Now,
2xy = (x + y)2 - (x2 + y2)
2xy= 222 - 404 = 484 - 404 = 80
xy = 40