It's for the sake of checking, if she came and checked the students' notebooks, the teacher would have a problem with that. I was quite surprised that even here we have to write everything verbally on this topic. I understand to write at the beginning when taking polynomials. But with division of polynomials, it seems unnecessary to me when division is actually multiplication by the inverse of value.
I was quite surprised that even here we have to write everything verbally on this topic.