Question

Помогите решить пожалуйста срочно

Answer 1

$frac{t^{2}}{t^{2}-u^{2}} u frac{t-u}{4t+4u}; frac{t^{2}}{(t-u)(t+u)} u frac{t-u}{4(t+u)}; frac{4t^{2}}{4(t+u)(t-u)} u frac{(t-u)^{2} }{4(t+u)(t-u)}$

$frac{4t^{2}}{4(t+u)(t-u)} u frac{(t^{2}-2tu+u^{2} )}{4(t+u)(t-u)}$