испанского

испанского

"Of Spanish" or "Spanish" (possessive form).

Here, 'испанского' is in the genitive case, used to denote the object of study.

Моя подруга изучает испанского языка.

My friend studies Spanish language.

In this sentence, 'испанского' is in the genitive case, specifying the subject matter of study.

Этот учебник предназначен для студентов, изучающих испанского.

This textbook is intended for students studying Spanish.

Here, 'испанского' is applied in a possessive context, indicating the topic related to the Spanish language.

В классе мы провели интересное обсуждение по теме испанского.

In class, we had an interesting discussion on the topic of Spanish.