Question

hi there
i need a little help from u!!

compute the value of Z in the equation Z=(x/y)-(y/x), when x=-10 and y=-5

can anyone plss ans it!!
i need a correct and brinlist ans!!!
plsss!!

Answer 1

$z = \frac{x}{y} - \frac{y}{x} \\ \frac{ {x}^{2} - {y}^{2} }{xy} \\ \frac{ {( - 10}^{2}) - {( - 5)}^{2} }{ (- 10)( - 5)} \\ \frac{100 - 25}{50 } \\ \frac{75}{50} \\ z = \frac{3}{2}$