Find all pairs (x, y) of real numbers such that x + y = 10 and x^2 + y^2 = 56.
If you could also maybe explain how you got the anwser, so I can understand, that would help so much! :)
(x,y) = (5 + sqrt(7), 5 - sqrt(7)), (5 - sqrt(7), 5 + sqrt(7))
thats actually wrong sorry :(