If your formula bar is missing in your Excel ? Need to bring back your formula bar in excel?
How to hide or unhide formula bar in Excel
Do not want to show your formula to others then you can hide your formula bar.
Will see how to hide formula bar or unhide the formula bar in excel.
Please refer the below screenshot.
Select VIEW option in that SHOW group, you can check or uncheck FORMULA BAR.
Note: screen shot taken in office 2013.