According to our understanding, you can switch the input method in your computer to the sogou input method mode, and then click "Toolbox" on the far right, click "Symbol Collection" in the dialog box, select "Math/Unit" on the far left, and click the required writing unit, but it should only be used to send WeChat on your computer.

Knowledge expansion: 1. Square root is a mathematical symbol, also called quadratic square root, which is expressed by √ ~. Among them, the non-negative square root is called arithmetic square root, and a positive number has two real square roots, one positive and one negative, which are reciprocal. 2. If you want to use the keyboard to input the square root symbol in excel, you can use alt+4 1420, that is, hold down the alt key and press the 4 1420 key in turn on the keypad.