=(a²-1)(a²+1) /( (a³+a²)+(a+1))= (a-1)(a+1)(a²+1) / (a+1)(a²+1) =a-1.
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
=(а-1)
а⁴-1⁴=(а²-1)(а²+1)=(а-1)(а+1)(а²+1)=
(а-1)(а³+а+а²+1)
=(a²-1)(a²+1) /( (a³+a²)+(a+1))= (a-1)(a+1)(a²+1) / (a+1)(a²+1) =a-1.