Answer:
[tex]2b - 4a \\ = (b - 2a)[/tex]
Hope you understand
[tex]\Large \boxed{2(-2a+b)}[/tex]
Step-by-step explanation:
[tex]2b - 4a[/tex]
Rearranging the expression.
[tex]-4a+2b[/tex]
Factoring out 2 from the expression.
[tex]2(-2a)+2(b)[/tex]
[tex]2(-2a+b)[/tex]
