- 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
$(a)$ What should be added to $x^2+xy+y^2$ to obtain $2x^2+3xy$?
$(b)$ What should be subtracted from $2a+8b+10$ to get $-3a+7b+16$
Given: $(a)$ Terms $x^2+xy+y^2$ and $2x^2+3xy$.
$(b)$. Terms $2a+8b+10$ and $-3a+7b+16$
To do: $(a)$ This is to find out what should be added to $x^2+xy+y^2$ to obtain $2x^2+3xy$.
$(b)$ This is to find out what should be subtracted from $2a+8b+10$ to get $-3a+7b+16$
Solution: $(a)$. Let's assume $'a'$ to be the required term
$=a+(x^2+y^2+xy)=2x^2+3xy$
$a=2x^2+3xy-(x^2+y^2+xy)$
$a=2x^2+3xy-x^2-y^2-xy$
$a=x^2-y^2+2xy $
Therefore, $x^2-y^2+2xy$ should be added to $x^2+xy+y^2$ to obtain $2x^2+3xy$.
$(b)$. Let's assume $'p'$ to be the required term
$(2a+8b+10)-p=-3a+7b+16$
$p=2a+8b+10-(-3a+7b+16)$
$p=2a+8b+10+3a-7b-16$
$p=5a+b-6$
Therefore, $5a+b-6$ should be subtracted from $2a+8b+10$ to get $-3a+7b+16$.
Advertisements
To Continue Learning Please Login
Login with Google