How to Search Files By Type in Windows 7

It is Very Easy to search Files by type in windows. Here is an example , if your pc have same name files with different extension like "cv.docx" and "cv.jpeg" then what to do.

1. Open My computer
2. Type in Search Box "cv *.docx" without quote (To Search Document files Only)
3. Type in Search Box "cv *.pdf" without quote (To Search Pdf files Only)

That's all See in Images Below.

For Document See Image below

Solving Biquadratic or 3rd order quadratic equation in Mathematics

You can use the following formula to Solve 3rd order Polynomial Equation. 

If   then its root x(1),x(2),x(3) are as fallow

x1=

 

x2=

 

x3=