### Video Transcript

Given that the velocity vector π π΄ is equal to 17π and the velocity vector π π΅ is equal to eight π. Find the velocity vector π π΅π΄.

We can calculate π of π΅π΄ by subtracting π π΄ from π π΅. In this case, we subtract the vector 17π from the vector eight π. Eight π minus 17π is equal to negative nine π. This means that when π π΄ is equal 17π and π π΅ is equal to eight π, then π of π΅π΄ is equal to negative nine π.