1. Г
x²+2x-15=0
Через Виета
x1+x2=-2
x1•x2=-15
-5;3
2. Д
x²-2x-15=0
x1+x2=2
5;-3
3. А
x²+8x+15=0
x1+x2=-8
x1•x2=15
-5;-3
4. В
x²-8x+15=0
x1+x2=8
5;3
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
1. Г
x²+2x-15=0
Через Виета
x1+x2=-2
x1•x2=-15
-5;3
2. Д
x²-2x-15=0
x1+x2=2
x1•x2=-15
5;-3
3. А
x²+8x+15=0
x1+x2=-8
x1•x2=15
-5;-3
4. В
x²-8x+15=0
x1+x2=8
x1•x2=15
5;3