![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
Simplify the following expressions:$ (5+\sqrt{7})(5-\sqrt{7}) $
Given:
\( (5+\sqrt{7})(5-\sqrt{7}) \)
To do:
We have to simplify the given expression.
Solution:
We know that,
$(a+b)(a-b)=a^2-b^2$
Therefore,
$(5+\sqrt{7})(5-\sqrt{7})=(5)^{2}-(\sqrt{7})^{2}$
$=25-7$
$=18$
Hence, $(5+\sqrt{7})(5-\sqrt{7})=18$.
Advertisements