Question

упростите c^2/c^3-8 - 5c+1/8-c^3 - 3-3c/8-c^3

решите - 2a-3/1-a^2 + 2-a/a^2-1

Answer 1

1)= с²/(с³-8) +(5с+1)/с³-8) + (3-3с)/с³-8= (с²+5с+1+3-3с)/(с³-8)=
   =(с²+2с+4)/(с³-8)
 2) (2а-3)/(1-а²)-(2-а)/(1-а²)=(2а-3-2+а)/(1-а²)=3а-5)/(1-а²)