(5а-7)(3а+1)=15а^2-21а+5а-7=15а^2-16а-7
(3b+7)(4-3b)=12b+28-9b^2-21b=28-9b^2-9b
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
(5а-7)(3а+1)=15а^2-21а+5а-7=15а^2-16а-7
(3b+7)(4-3b)=12b+28-9b^2-21b=28-9b^2-9b