2x²-10x per 7x dikali 7x² per x²-25=....

[tex]\frac{2x^2-10x}{7x} * \frac{7x^2}{x^2-25} [/tex]
=>[tex]2x(x-5) * \frac{x}{(x+5)(x-5)} [/tex]
=>[tex] \frac{2x^2}{x+5} [/tex]