There are many ways to type the root sign (√) on the computer: ① The simplest way is to right-click on the small keyboard of the floating language bar on the desktop to select the mathematical symbol, and there will be a √ on the soft keyboard. Input directly from the keyboard, the method is as follows: ② Hold down the shift key (Alt key) with your left hand, press 4 1420 with your right hand in turn (don't press the one on the keyboard, press the one on the right), release your hand, and the root sign (√) will come out. Similarly, pressing 178 is the square (&; # 178; According to 179 as the cubic number (&; # 179; ) 2 15 is the multiplication symbol (×), 247 is the division symbol (), 176 is the degree (), and there are many mathematical and special symbols to input.