SOLUTION: I'm trying to help my younger sister factorise the following, 144x^2-24, it seems simple but I've forgotten the trick to doing it. Help!

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Question 3004: I'm trying to help my younger sister factorise the following, 144x^2-24, it seems simple but I've forgotten the trick to doing it. Help!


Found 2 solutions by Jessmh123, longjonsilver:
Answer by Jessmh123(22) About Me  (Show Source):
You can put this solution on YOUR website!
first you have to pull out the greatest common factor in both terms. since 24 is the gcf, we pull it out.
24(6x^2-1)
you get 24(6x^2-1) because 24*6x^2=144x^2 and 24*1=24

Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
look for anything that appears in both parts...both have "24" since 144 is 24*6, so we can write: 24%286x%5E2-1%29

Jon.