![Trending Articles on Technical and Non Technical topics](/images/trending_categories.jpeg)
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Solve the equation$x^2+ 6x - (a^2 +2a - 8) = 0$.
Given: $x^2+ 6x - (a^2 +2a - 8) = 0$.
To do: Solve the equation.
Solution:
$x^2 + 6x - (a^2 +2a - 8) = 0$
=$ x^2+ 6x - (a^2 +2a + 1- 9) = 0$
=$ x^2 + 6x - (a^2 +2a + 1) + 9 = 0$
=$ x^2 + 6x + 9- (a^2 +2a + 1) = 0$
= $x^2 + 2\times3x + 3^2 - (a+ 1)^2 = 0$
= $(x+3)^2 - (a+1)2$
$x+3 = -(a+1)$ or $(a+1)$
or $x = -a-1-3$ or $a+1-3$
or$ x = -a-4 $or $a + 2$
Advertisements