Question

Сократите дробь:
m^2-n2-km+kn/k^2-km-mn-n^2
Вычислите:
6^-5/27^-2*4^-4

Answer 1

[(m-n)(m+n)-k(m-n)]/[(k-n)(k+n)-m(k+n)]=(m-n)(m+n-k)/(k+n)(k-n-m)=-(m-n)/(k+n);