быстрых

быстрых

"Fast" or "quick" (plural form, genitive case).

Here, 'быстрых' is used as an adjective in the genitive plural form to describe the noun 'автомобиля' (cars).

У меня есть три быстрых автомобиля.

I have three fast cars.

In this sentence, 'быстрых' is an adjective in the genitive plural form and describes 'решений' (decisions).

Благодаря быстрых решений, мы успели закончить проект.

Thanks to quick decisions, we managed to finish the project on time.

Here, 'быстрых' is an adjective in the prepositional plural form to describe 'животных' (animals).

Книга о быстрых животных оказалась очень интересной.

The book about fast animals turned out to be very interesting.