The advantage of not writing formulas in mathematics is simplicity, but the disadvantage is that it is not accurate enough and inconvenient to communicate.

1, Advantages: Not writing formulas can reduce the space and make the topic more concise and clear.

2. Disadvantages: not accurate enough: writing formulas will lead to inaccurate expression, easy ambiguity or misunderstanding, inconvenient communication, and not conducive to academic exchanges.