a)9/b^2+3b - 3/b=9/b(b+3) - 3/b=9/b(b+3)-3(b+3)/b(b+3)=9-3b-9/b(b+3)=-3b/b(b+3),
б)8b+5-9b^2/b=8b^2+5-9b^2/b=5-b^2/b
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
a)9/b^2+3b - 3/b=9/b(b+3) - 3/b=9/b(b+3)-3(b+3)/b(b+3)=9-3b-9/b(b+3)=-3b/b(b+3),
б)8b+5-9b^2/b=8b^2+5-9b^2/b=5-b^2/b