How to type a "root number" in a WORD document?

1. Open word and click "Insert" on the toolbar;

2. Click the small inverted triangle under "Formula" on the right and select "Insert New Formula";

3. Click the inverted triangle of "radical" on the right, and select the number format of radical that suits you;

4. Click the dotted box in the root symbol and enter a number.

5. The number length is not limited, and the line above the root sign will become longer with the length of the number side.

For the flow of each line segment, establish a limiting formula, such as:

S _ a & lt= 26

S _ b & lt= 12