Question

помогите!!даю 99 балов

Answer 1

5/a+(3a-5)/(a+1)=(5a+5+3a²-5a)/[a(a+1)]=(3a²+5)/[a(a+1)]

2c/(c-d)-(c-d)/c=(2c²-c²+d²)/[c(c-d)]=(c²+d²)/[c(c-d)]