Question

Помогите срочно. Пжжжжж даю 40 баллов!!!!

Answer 1

$1)\frac{4t}{v} =\frac{4t*(t-v)(t+v)}{v(t-v)(t+v)}=\frac{4t(t^{2}-v^{2})}{v(t-v)(t+v))}=\frac{4t^{3}-4tv^{2}}{v(t-v)(t+v)}\\\\2)\frac{t}{t-v}=\frac{t*v(t+v)}{(t-v)*v(t+v)}=\frac{vt^{2} +tv^{2}}{v(t-v)(t+v)}\\\\3)\frac{1}{t+v}=\frac{1*v(t-v)}{(t+v)*v(t-v)}=\frac{vt-v^{2}}{v(t-v)(t+v)} \\\\Otvet:\boxed{\frac{4t^{3}-4tv^{2}}{v(t-v)(t+v)}; \ \frac{vt^{2} +tv^{2}}{v(t-v)(t+v)} \ \frac{vt-v^{2}}{v(t-v)(t+v)}}$

$Otvet:\boxed{\frac{4t^{3}-4tv^{2}}{v(t^{2} -v^{2}) }; \ \frac{vt^{2} +tv^{2}}{v(t^{2}-v^{2} )}; \ \frac{vt-v^{2}}{v(t^{2} -v^{2} )}}$