If you can't see mathematical equation objects inside a ".doc or .docx file"

For example:

You can follow the next steps to enable the feature which allows these objects:

1. Close all programs and windows related to Microsoft Office 2010.

2. Click the "Start" button and choose "Control Panel." Click "Add/Remove Programs."

3. Click "Microsoft Office" in the installed programs list or "Microsoft Word" if you installed the Word program by itself. Choose "Change".

4. Click "Add or Remove Features" in the Maintenance section. Click "Continue".

5. Click "Office Tools" to expand the menu.

6. Click "Equation Editor" and choose "Run from my computer."

7. Click "Continue". When finished, press "close" button and start Microsoft Office Word. Now the equation objects will be available.

Reference Links

1. http://www.ehow.com/how_5049820_install-microsoft-word-equation-editor.html

2. http://www.technipages.com/word-2010-2007-enable-equation-editor.html