How to insert equation in Google docs

How to insert the equation in Google docs

1. Go to the menu bar
2. Click insert
3. Then select the equation  as shown in following figure

4. Now click on equation the box will appear where you can write the equation

5. You will also see the list of equation tools to be helpful for writing equation as in Microsoft word.

6. Now select the equation, as I was going to write the worst complexity of Tabu search that is n square / 2 so I adapted the way shown in following figures

7. The final equation written is shown as below