PROGRESION GEOMETRICA

https://www.youtube.com/watch?v=4xDsavE8lBQ          ( 1 )

https://www.youtube.com/watch?v=qQ4FFRKSF3M      ( 2 )

 https://www.youtube.com/watch?v=rgGhDQd2KAU     ( 3 )

https://www.youtube.com/watch?v=8rmFEhuTeZE          ( 4 )

https://www.youtube.com/watch?v=KrRGsan3m-0          ( 5 )

https://www.youtube.com/watch?v=mhqgb2ztFS8           ( 6 )