Ответ:
Пошаговое объяснение:
(5/7)²·7/15=25/7² ·7/15=5/(7·3)=5/21
(3/4)²·32/45=9/16 ·32/45=2/5=0,4
(1/2)²·4/5=1/4 ·4/5=1/5=0,2
(2 5/7)²·14/19=19²/7² ·(2·7)/19=(19·2)/7=38/7=5 3/7
(2 1/3)²·27/98=8²/3² ·3³/98=(64·3)/98=96/49=1 47/49
(8/11)²·11/32=8²/11² ·11/(4·8)=8/(11·4)=2/11
(3/10)²·5/6=3²/(2·5)² ·5/(2·3)=3/(4·5·2)=3/40=0,075
(2/3)²·15/24=4/3² ·(3·5)/(4·6)=5/(3·6)=5/18