Ответ:
(1/5x-4/13y)×(1/5x+4/13y)=
1/5x-4/13×1/5+4/13=
(1/5x×1/5)-(4/13×4/13)=
1/25x^2-16/169y^2;
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
(1/5x-4/13y)×(1/5x+4/13y)=
1/5x-4/13×1/5+4/13=
(1/5x×1/5)-(4/13×4/13)=
1/25x^2-16/169y^2;