![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
Check whether the following are quadratic equations:
$(x – 2) (x + 1) = (x – 1) (x + 3)$
Given:
Given equation is $(x – 2) (x + 1) = (x – 1) (x + 3)$
To do:
We have to check whether the given equation is quadratic.
Solution:
The standard form of a quadratic equation is $ax^2+bx+c=0$.
$(x – 2) (x + 1) = (x – 1) (x + 3)$
$x(x+1)-2(x+1)=x(x+3)-1(x+3)$
$x^2+x-2x-2=x^2+3x-x-3$
$x^2-x^2-x-2x-2+3=0$
$-3x+1=0$ is not of the form $ax^2+bx+c=0$
Therefore, $(x – 2) (x + 1) = (x – 1) (x + 3)$  is not a quadratic equation. 
Advertisements