Question

tex]\blue{\boxed{What\:is\:duplex\:method\:?}}[/tex]​​

Answer 1

Step-by-step explanation:

didnt understand what to do..

Answer 2

Answer:

In other words, from the outside working inwards, take the outermost digits, multiply them, double them, then take the next adjoining digits, multiply then, double them, then the next digits.