Im currently doing my Kumon (A math tutoring center I guess) homework, and Im having a bit of difficulty answering a simultaneous equation, involving $x$ and $y$ variables to the second power. School curriculum wise, we're not close to learning this, so I apologize if I don't understand something.
Here is the equation:
$\displaystyle xy = 12$
$\displaystyle x^2+y^2 = 25$
Assuming that $x+y = A$ and $xy = B$
If I'm forgetting something please let me know, as I'm kind of a noob at this. Any help is welcome!