Answer :
Given:
[tex]\mleft(8y^6\mright)\mleft(-3y^5\mright)[/tex]We will use the following rule of the exponents to simplify the expression:
[tex]a^m\cdot a^n=a^{m+n}[/tex]So, the expression will be simplified as follows:
[tex]\mleft(8y^6\mright)\mleft(-3y^5\mright)=(8)(-3)\cdot y^{6+5}=-24y^{11}[/tex]So, the answer will be:
[tex]-24y^{11}[/tex]