SOLUTION: X^2+y^2=52, x-y =2 then what is the value of XY?

Algebra ->  Equations -> SOLUTION: X^2+y^2=52, x-y =2 then what is the value of XY?      Log On


   

Question 1120656: X^2+y^2=52, x-y =2 then what is the value of XY?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
?
x=X
y=Y

x%3C%3EX

y%3C%3EY

Which?

Putting variables only lower-case,
%28x-y%29%5E2=x%5E2%2By%5E2-2xy
2%2A2=52-2xy
2=26-xy
-24=-xy
highlight%2824=xy%29