Hi, here's a problem that I don't quite understand:

"The sum of two numbers is 26, the sum of their squares is a minimum. Determine the two numbers."

How would i model the 2 numbers? Is this correct? X^2 + (26-X)^2 = 0? What does it mean by the sum of their squares is a MINIMUM? What would the equation look like if the sum of their squares was a MAXIMUM?

Thanks.