Question 9697
Factor:

{{{(2a+4)(a-3)-(2a+4)(2a-1)}}}  Notice the common factor in the two terms? Factor it out>

{{{(2a+4)((a-3)-(2a-1))}}} Now simplify.

{{{2(a+2)(-a-2)}}} Rewrite (-a-2) as -(a+2) and move the negative sign to the front.

{{{-2(a+2)(a+2)}}}