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Given Quadratic Equations have positive and negative solutions, solve the following and list negative solutions:
a) n^2+(n+1)^2=13 ----> Negative solution is n = -3.
b) n+(n+1)(n+2)=14 ----> n^2 + 4n - 12 = 0 ---> negative solution is n= -6.
c) n(n+2)+n+5=15 ----> n*(n+2) + n = 15-5 = 10 ----> n*(n+3) = 10 ---> negative solution is n = -5.
Why do you ask ?
Do you have difficulties solving quadratic equations?
If so, see the lessons
- Introduction into Quadratic Equations
- PROOF of quadratic formula by completing the square
- HOW TO solve quadratic equation by completing the square - Learning by examples
- Solving quadratic equations without quadratic formula
- Who is who in quadratic equations
- Using quadratic equations to solve word problems
in this site.
Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this textbook under the topic "Quadratic equations".