a(b²-1)-6a(b²-1)+9(b²-1)=аб²-а-6аб²+6а+9б²-9=-5аб²+5а+9б²-9
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
a(b²-1)-6a(b²-1)+9(b²-1)=аб²-а-6аб²+6а+9б²-9=-5аб²+5а+9б²-9