Resuelve la siguiente operaciór \( \frac{2}{x-5}+\frac{3}{x^{2}-25} \) \( \frac{x+15}{9\left(x^{2}-5\right)} \) \( \frac{x+30}{4\left(x^{2}-9\right)} \) \( \frac{2 x+13}{x^{2}-25} \) \( \frac{x+13}{x^{2}-15} \)

b. \( x^{2}+2 x=15 \)

Write an equation that expresses the following relationship. \( u \) varies directly with \( p \) and inversely with \( d \) In your equation, use \( k \) as the constant of proportionality. पा]

Write an equation that expresses the following relationship. \[ d \text { varies directly with } w \text { and inversely with the square root of } p \] In your equation, use \( k \) as the constant of proportionality.

Write an equation that expresses the following relationship. \( p \) varies jointly. with \( d \) and the square root of \( u \) In your equation, use \( k \) as the constant of proportionality. \( \square=\square \quad \frac{\square}{\square} \)

Write an equation that expresses the following relationship. \( w \) varies directly with the cube of \( u \) and inversely with \( d \) In your equation, use \( k \) as the constant of proportionality,