In fact, there are many schemes for this, which can be done through various channels. For example, the most likely and convenient answer should be the answer in the textbook or the answer in the workbook you bought, which is more convenient and quick to turn over.

Secondly, we use various search software, such as Ape Search and homework help. Generally speaking, you can search directly by taking photos, or you can find similar topics with similar ideas for solving problems, which is helpful to you.

Finally, you can also directly enter the topic in Baidu and other websites, or you can search it, but it is more troublesome.

Hope to adopt