Question

Срочно помогите пожалуйста!!!!!!!!!!!!!!!!

Answer 1

$\frac{k}{k-m}+\frac{m^2-k^2}{mk+m^2}:\frac{m^2-2mk+k^2}{k^2}=$

$\frac{k}{k-m}+\frac{(m-k)(m+k)}{m(k+m)}:\frac{(m-k)^2}{k^2}=$

$\frac{k}{k-m}+\frac{(m-k)(m+k)}{m(k+m)} \cdot \frac{k^2}{(m-k)^2}=$

$\frac{k}{k-m}+\frac{1}{m} \cdot \frac{k^2}{m-k}=$

$\frac{k}{k-m}-\frac{k^2}{m(k-m)}=$

$\frac{km}{m(k-m)}-\frac{k^2}{m(k-m)}=$

$\frac{km-k^2}{m(k-m)}=$

$\frac{-k(k-m)}{m(k-m)}=- \frac{k}{m}$