А) а2-х2/а3-х3 : а+х/ а2-х2

Question

А) а2-х2/а3-х3 : а+х/ а2-х2

Answer 1

(a²-x²)/(a³-b³):(a+x)/(a²-x²)=(a²-x²)/(a-x)(a²+ax+x²)*(a-x)(a+x)/(a+x)=
=(a²-x²)/(a²+ax+x²)