In math class, the teacher explained the concept of relative complement.

What is the difference between these two products?

This concept is difficult.

In set theory, the symmetric difference indicates the difference between two sets.

I am looking for a teacher who can teach me this dialect.

He is a respected elder in our village.

Mr. Tanaka is my math teacher.

He gave me a detailed explanation of the problem.

He explained the problem.

I will teach mathematics to new students tomorrow.