№1) а²-5а-2а+10=0
а²-7а+10=0
D=7²-4*1*10=49-40=9=3²
a1=5
a2=2
№9) а²-2аd+2ad-2d²
a²-2d²
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
№1) а²-5а-2а+10=0
а²-7а+10=0
D=7²-4*1*10=49-40=9=3²
a1=5
a2=2
№9) а²-2аd+2ad-2d²
a²-2d²