I learned the method of factorization in math class.

I learned the method of factoring in math class.

It's difficult to solve this mathematical expression.

This festival is held every year.

It took him a long time to solve the math problem.

He untied his shoelaces.

To solve this equation, you first need to perform factorization.

First of all, we need to make a plan.

Your cooperation is needed for this project.

I need you.