Hipotenüsün karesi diğer iki kenarın kareleri toplamına eşittir.
- The square of the hypotenuse is equal to the sum of the squares of the other two sides.
The fraction \frac{x-8}{x^2-64} can be simplified to \frac{1}{x+8} using the difference of two squares.
... and you actually see those two squares are exactly the same ...