9а^2–12а+4–(3а^2+15а+а+5)=9а^2–12а+4–3а^2–15а–а–5=6а^2–28а–1
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
9а^2–12а+4–(3а^2+15а+а+5)=9а^2–12а+4–3а^2–15а–а–5=6а^2–28а–1