Respuesta :

Answer:

8x²-15y²+xy

Step-by-step explanation:

We need to use FOIL for this:

First

Outer

Inner

Last

(4x+5y)(2x-3y)+3xy=

8x²-12xy+10xy-15y²+3xy=

8x²-15y²+xy

Nvm he already did it :)